Two taps a nd b can fill a tank in 8 nd 12 hours respectively. If they r opened on alternate hours nd if pipe a is opened first in how many hours, the tank will be ful ?
Ur ans is rigjt
If the answer is right. I do this by considering volume of tank is 1 cc, if first tap is opened for one hour it will fill 1/8 volume in one hour , after one hour tap 2 then it wil fill 1/12 in one hour (7/8-1/12), like continue u will get answer