Two pipes can separately fill a tank in 20 and 30 hours respectively. Both the pipes are opened to fill the tank but when the tank is full, a leak develops in the tank through which one-third of water supplied by both the pipes goes out. What is the total time taken to fill the tank?
A. 18 hrs
B. 16 hrs
C. 15 hrs
D. 12 hrs
Be the first to comment if anything wrong with this mcq
civil engineering Mcqs
- highway engineering Mcqs
- airport engineering Mcqs
- applied mechanics and graphic statics Mcqs
- surveying Mcqs
- tunnel engineering Mcqs
- design of masonry structures Mcqs
- building materials and construction Mcqs
- soil mechanics and foundation engineering Mcqs
- structural analysis Mcqs
- water supply engineering Mcqs
- engineering economy Mcqs
- structural design specifications Mcqs
- railway engineering Mcqs
- irrigation water resources engineering and hydrology Mcqs
- environmental engineering Mcqs
- rcc structures design Mcqs
- design of concrete structures Mcqs
- waste water engineering Mcqs
- design of steel structures Mcqs
- construction planning and management Mcqs
- estimating and costing Mcqs
- strength of materials Mcqs
- theory of structures Mcqs
- dock and harbor engineering Mcqs
- fluid mechanics Mcqs
- elements of remote sensing Mcqs
- hydraulics and fluid mechanics Mcqs
economics Mcqs
- the national economy Mcqs
- profit maximizing under perfect competition and monopoly Mcqs
- application of economics Mcqs
- the aggregate demand aggregate supply model Mcqs
- surplus Mcqs
- money interest rates and output Mcqs
- average and total cost Mcqs
- stabilization adjustment reform and privatization Mcqs
- risks and diversification efficient market hypothesis Mcqs
- the phillips curve Mcqs
- supply and demand Mcqs
- capital formation investment choice information technology and technical progress Mcqs
- aggregate supply unemployment and inflation Mcqs
- elasticity Mcqs
- comparative gdp Mcqs
- roots of modern macroeconomics Mcqs
- production factors Mcqs
- poverty malnutrition and income inequality Mcqs
- trade regulations and industrial policies Mcqs
- monetary union Mcqs
- exchange rate systems and currency crises Mcqs
- economic development in historical perspective Mcqs
- exchange rate determination Mcqs
- monopoly competition Mcqs
- the balance of payments Mcqs
- inflation productivity Mcqs
- macroeconomic issues and analysis Mcqs
- employment migration and urbanization Mcqs
- macroeconomic policy tools Mcqs
- supply side policies Mcqs
- exchange rate adjustments and the balance of Mcqs
- miscellaneous Mcqs
- taxation Mcqs
- trade policies for the developing nations Mcqs
- markets efficiency and the public interest Mcqs
- the external debt and financial crises Mcqs
- budget deficits and the trade balance Mcqs
- alternative theories of the firm Mcqs
- public goods Mcqs
- the meaning and measurement of economic development Mcqs
- characteristics and institutions of developing countries Mcqs
- agriculture irrigation system of pakistan Mcqs
- education health and human capital Mcqs
- economic problems of developing countries Mcqs
- theories of economic development Mcqs
- basic of economics Mcqs
- consumer theory vs real consumers Mcqs
- applied microeconomics Mcqs
- long term economic growth Mcqs
- externality internality Mcqs
- fiscal and monetary policy Mcqs
- prices wages taxes Mcqs
- balance of payments aid and foreign investment Mcqs
- international factor movements and multinational corporations Mcqs
- entrepreneurship organization and innovation Mcqs
- the international economy and globalization Mcqs
- population and development Mcqs
- non tariff trade barriers Mcqs
- foundations of modern trade theory Mcqs
- global economic development Mcqs
- market Mcqs
- rural poverty and agricultural transformation Mcqs
- regional trading arrangements Mcqs
- foreign exchange Mcqs
- introduction to economics Mcqs
- world economy miscellaneous Mcqs
- sources of comparative advantage Mcqs
- natural resources and the environment toward sustainable development Mcqs
- monopoly Mcqs
- asymmetric information Mcqs
- income inequality Mcqs
- labour market Mcqs
- tariffs Mcqs
- development planning and policy making the state and the market Mcqs
- oligopoly Mcqs
- industrial development Mcqs
- costs supply and perfect competition Mcqs
- human capital Mcqs
- monetary fiscal and incomes policy and inflation Mcqs
- stocks Mcqs
political science Mcqs
- bureaucracy Mcqs
- electorate and representation Mcqs
- property Mcqs
- ibn e khaldun Mcqs
- rule of law muslim political thoughts Mcqs
- sovereignty of state Mcqs
- parliamentary and presidential systems Mcqs
- the rights Mcqs
- france constitution Mcqs
- liberty Mcqs
- pakistan constitution Mcqs
- india constitution Mcqs
- political parties and pressure group Mcqs
- usa federalism Mcqs
- international law Mcqs
- state of local govt Mcqs
- plato Mcqs
- usa constitution Mcqs
- liberalism Mcqs
- al ghazali Mcqs
- development theories and under development Mcqs
- constitutional development and national movement in subcontinent Mcqs
- marxian socialism Mcqs
- marxian theory of origin of state Mcqs
- u s s r constitution Mcqs
- nizam ul mulk tusi Mcqs
- the state Mcqs
- england constitution Mcqs
- nature theories and state function Mcqs
- constitution and constitutional government Mcqs
- allama iqbal Mcqs
- shah walliullah Mcqs
- public opinion Mcqs
- cabinet government Mcqs
- al mawardi muslim political thoughts Mcqs
- muslim political thoughts al farabi Mcqs
- justice Mcqs
- freedom of speech and press role Mcqs
- western political thoughts Mcqs
- origin of state Mcqs
- evolutionary socialism Mcqs
- fascism Mcqs
- democracy Mcqs
- aristotle Mcqs
- equality Mcqs
statistics Mcqs
- sample linear regression Mcqs
- normal distribution Mcqs
- presentation of data Mcqs
- statistical inference Mcqs
- measures of location Mcqs
- basic statistics Mcqs
- correlation and regression Mcqs
- sampling Mcqs
- binomial and hyper geometric probability Mcqs
- index number Mcqs
- hypothesis testing Mcqs
- measures of dispersion Mcqs
electrical engineering Mcqs
- economics of power generation Mcqs
- analog electronics Mcqs
- solid state switching circuits Mcqs
- parallel circuits Mcqs
- switchgear and protection Mcqs
- op amp circuits Mcqs
- transistor audio power amplifiers Mcqs
- electrostatics Mcqs
- heating and welding Mcqs
- multi stage transistor amplifiers Mcqs
- passive filters Mcqs
- network theorems Mcqs
- regulated d c power supply Mcqs
- a c fundamentals circuits and circuit theory Mcqs
- electromagnetic induction Mcqs
- power electronics Mcqs
- magnetism and electromagnetism Mcqs
- transformers Mcqs
- modulation and demodulation Mcqs
- d c generators Mcqs
- semiconductor theory Mcqs
- single phase induction motors Mcqs
- semiconductor diode Mcqs
- hybrid parameters Mcqs
- digital electronics Mcqs
- oscillators Mcqs
- earthing or grounding Mcqs
- single stage transistor amplifiers Mcqs
- d c motors Mcqs
- transistor biasing Mcqs
- amplifiers with negative feedback Mcqs
- basic electrical Mcqs
- electronic instruments Mcqs
- synchronous motors Mcqs
- field effect transistors fet Mcqs
- magnetic circuit Mcqs
- control systems Mcqs
- industrial drives Mcqs
- power generation Mcqs
- series parallel circuits Mcqs
- transistor tuned amplifiers Mcqs
- electrical engineering materials Mcqs
- rectifiers and converters Mcqs
- integrated circuits Mcqs
- scr silicon controlled rectifiers Mcqs
- cables Mcqs
- polyphase induction motors Mcqs
- measurement and instrumentation Mcqs
- transistors Mcqs
- electrical machine design Mcqs
- electrolysis and storage of batteries Mcqs
- electric traction Mcqs
- transmission and distribution Mcqs
judiciary and law Mcqs
- police order 2002 Mcqs
- muslim family law ordinance 1961 Mcqs
- good conduct prisoners probational release rules 1927 Mcqs
- offences of zina ordinance 1979 Mcqs
- family courts act 1964 Mcqs
- court fees act of 1870 Mcqs
- 1872 contract act Mcqs
- civil procedure 1908 Mcqs
- control of narcotic substances act 1997 Mcqs
- offenders ordinance probation 1960 Mcqs
- national accountability ordinance 1999 Mcqs
- medical jurisprudence Mcqs
- specific relief act 1877 Mcqs
- prisoners probational release act 1926 Mcqs
- code of criminal procedure 1898 Mcqs
- pakistan panel code 1860 Mcqs
- property hudood ordinance 1979 Mcqs
- west pakistan civil courts ordinance 1962 Mcqs
- limitation act 1908 Mcqs
- pakistan constitution 1956 Mcqs
- anti terrorism act 1997 Mcqs
- pakistan constitution 1973 Mcqs
- sale of goods act 1930 Mcqs
- constitution of pakistan 1962 Mcqs
- executive order on parole 1934 Mcqs
- qanun e shahadat 1984 Mcqs
mechanical engineering Mcqs
- compressors gas turbines and jet engines Mcqs
- theory of machines Mcqs
- nuclear power plants Mcqs
- engineering materials Mcqs
- strength of materials mechanical engineering Mcqs
- thermodynamics Mcqs
- heat transfer Mcqs
- i c engines Mcqs
- steam boilers engines nozzles and turbines Mcqs
- engineering mechanics Mcqs
- fluid mechanics mechanical engineering Mcqs
- production technology Mcqs
- machine design Mcqs
- hydraulic machines Mcqs
- workshop technology Mcqs
- refrigeration and air conditioning Mcqs
english literature Mcqs
- introduction to literary theory Mcqs
- miscellaneous literature Mcqs
- famous playwright poet and others Mcqs
- introduction to literary studies Mcqs
- cultural and literary in modernity Mcqs
- ages era period Mcqs
- cultural and literary english renaissance Mcqs
- modern poetry and poetics Mcqs
- medieval literature and culture Mcqs
- african american literature Mcqs
- the gothic novel Mcqs
- american literature Mcqs
- language and linguistics Mcqs
- english romantic poetry Mcqs
- literary theory and criticism Mcqs
- cultural and literary 18th 19th centuries Mcqs
software engineering Mcqs
- software metrics Mcqs
- software modelling Mcqs
- advanced software engineering Mcqs
- software processes models software development Mcqs
- requirement engineering Mcqs
- basics of software engineering Mcqs
- software reliability and fault tolerance Mcqs
- architectural design Mcqs
- software evolution Mcqs
- dependability and security Mcqs
- software engineering types Mcqs
- software design Mcqs
- software testing and quality management Mcqs
- software management Mcqs
- design and implementation Mcqs
mathematics Mcqs
- arithmetic Mcqs
- volume and surface area Mcqs
- mixtures and allegations Mcqs
- probability Mcqs
- permutations and combinations Mcqs
- percentage Mcqs
- men food Mcqs
- compound interest Mcqs
- races and games Mcqs
- time distance Mcqs
- mensuration Mcqs
- height and distance Mcqs
- time and work Mcqs
- discount Mcqs
- quadratic equations Mcqs
- volumes Mcqs
- stocks and shares Mcqs
- average Mcqs
- problems on l c m and h c f Mcqs
- boats and streams Mcqs
- simple equations Mcqs
- odd man out series Mcqs
- interest Mcqs
- basic maths Mcqs
- areas Mcqs
- simplification and approximation Mcqs
- partnership Mcqs
- ratio and proportion Mcqs
- profit and loss Mcqs
- pipes and cisterns Mcqs
- problems on numbers Mcqs
pakistan current affairs Mcqs
- current governors of pakistan Mcqs
- current inspector generals of police Mcqs
- current federal ministers Mcqs
- current chief justices Mcqs
- current ambassadors of pakistan Mcqs
- current provincial ministers balochistan Mcqs
- current provincial ministers sindh Mcqs
- current chief ministers of pakistan Mcqs
- current provincial ministers kpk Mcqs
- current provincial ministers punjab Mcqs
- current presidents chairmen ceos Mcqs
- election 2018 Mcqs
- gilgit baltistan current ministers Mcqs