Two pipes A and B when opened simultaneously can fill an empty tank in 72 minutes. When the tank is initially empty, only pipe A is opened for 15 minutes. Next pipe A is closed and only pipe B is opened for 15 minutes. For filling the remaining part of the tank, if pipe A alone takes 76 minutes and pipe B alone takes K hours L minutes, then what are the factors the number (K+L)?
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Time and work, speed, interest, analytical reasoning7 questions
Asked in 1 of 2 sittings since 2016
2016
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2024
7
Most tested: Applied quantitative reasoning through relative speed/time-work and basic deduction puzzles.
- 2024On a circular track of 2 km, two persons A and B are running in clockwise direction with speeds 10 km/hr and 7 km/hr respectively. Another person C is running in anti-clockwise direction with the speed of 5 km/hr. If all the three start running from the same point and same time, after how much time will the three persons meet for the first time?
- 2024Two persons P and Q started a 300 meter race. Initially the speeds of P and Q are in the ratio 1 : 2. After 't' seconds, P quadrupled (four times) his speed and as a result, both of them reached the endpoint at same instant of time. But after 't' seconds, if P tripled his speed and Q reduced his speed by 5 seconds, then the race would have been won by 5 seconds. What is the value of 't'?
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