Question

A big tank contains some water. It can be emptied completely by using small bucket of 15 litre, 20litres,and 25litres an exact number of times. What can be the least capacity of the tank?

Answer 1

Answer:

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Answer 2

Answer:

1/15+1/20+1/25=(20+15+12)/300

least time =300/47=6.38 hr to fill or empty

capacity of tank is 300 litre