a) $${\text{4}}\frac{1}{2}$$ hours b) $${\text{4}}\frac{2}{3}$$ hours c) $${\text{3}}\frac{1}{2}$$ hours d) $${\text{3}}\frac{1}{4}$$ hours Answer: b Explanation: A → 4 hours B ...
View QuestionHaving the same capacity 9 taps fill up a water tank in 20 minutes. How many taps of the same capacity are required to fill up the same water tank in 15 minutes ?
a) 10 taps b) 12 taps c) 15 taps d) 18 taps Answer: b Explanation:$$\eqalign{ & \left[ {\frac{{{m_1} \times ...
View QuestionThree taps A, B, C can fill an overhead tank in 4, 6 and 12 hours respectively. How long would the three taps take to fill the tank if all of them are opened together ?
a) 2 hours b) 4 hours c) 3 hours d) 5 hours Answer: a Explanation:
View QuestionThree pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill the remaining part in 7 hours. The number of hours taken by C alone to fill the tank is:
a) 10 b) 12 c) 14 d) 16 Answer: c Explanation: Part filled in 2 hours = $$\frac{2}{6}$$ ...
View QuestionThree taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in:
a) 6 hours b) $$6\frac{2}{3}$$ hours c) 7 hours d) $$7\frac{1}{2}$$ hours Answer: c Explanation: $$\eqalign{ & \left( {{\text{A + ...
View QuestionA tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?
a) 3 hrs 15 min b) 3 hrs 45 min c) 4 hrs d) 4 hrs 15 min
View QuestionA large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
a) 15 minutes b) 20 minutes c) 27.5 minutes d) 30 minutes Answer: d Explanation: $$\eqalign{ & ...
View QuestionOne pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in:
a) 81 minutes b) 108 minutes c) 144 minutes d) 192 minutes Answer: c Explanation: $$\eqalign{ & ...
View QuestionA water tap fills a tub in ‘p’ hours and a sink at the bottom empties it in ‘q’ hours. If p < q and both tap and sink are opened the tank is filled in ‘r’ hours, then the relation between p, q, r :
A water tap fills a tub in 'p' hours and a sink at the bottom empties it in ...
View QuestionA pipe can fill a tank in x hours and another can empty it in y hours. In how many hours they together fill it in ( y > x) ?
a) (x - y) hours b) (y - x) hours c) $$\left( {\frac{{xy}}{{x - y}}} \right)\,{\text{hours}}$$ d) $$\left( {\frac{{xy}}{{y - x}}} ...
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