A tank is filled in 5 hours by three pipes A, B and C. If pipe C is twice as fast as B and, pipe B is twice as fast as A, then in how much time will pipe A alone take to fill the tank?
th part of the tank is filled by tap A alone in 6 hours and the rd part of the tank is filled by tap B in 8 hours.
i) If they opened together. How much time do both take to fill the tank completely?
ii) Which tap is more efficient between A and B?
Two train are moving in the same direction at 50 km/hr and 30 km/hr. The faster train crosses a man in the slower train in 18 seconds. Find the length of the faster train.
A frog climbs a well of height 60 m. It climbs 5 m above in a day and falls 4 m at the end of the day. In how many days will the frog climb the wall?
Nine men were hired for proofreading a book in 88 days requiring each of them to work 6 hours day. But three men did not join and the working hours were increased to eight. How many days will it now take to complete the work?
A pipe can fill a cistern in 20 minutes and another pipe can fill the same cistern in 25 minutes. Both pipes are started together. After 3 minutes, pipe A was closed. In how many times tank will be full?
Ayush has two candles of the same height, candle A and candle B, which can burn completely for 4 hours and 6 hours respectively. Once when there was no power supply, Ayush lit both the candles simultaneously. Find the time after which the ratio of their height will be 2:3.
A can do a piece of work in 7 days working 9 hours each day and B does the same work in 6 days working 7 hours each day. How long it will take them to complete it, working hours a day.
Find the time taken by pipe A and B together to fill the cistern if pipe A takes 16 min. more than that of A and B together. And tap B takes 4 minutes more than that of A and B together?
If one lion can eat one buffalo in one day, then how many buffalos can eight lions eat in eight days?
