pipe A B and C can fill the cistern in 15 days 12 days and 30 days respectively they started together but C left after two days in what time the remaining cistern will filled by A and B please tell fast tomorrow is my exam
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work done by a,b and c together in one day
A+B+C=1/15+1/12+1/30
=11/60
work done by A,B andC in two days
=11/60×2
=11/30
remaining work
=1-11/30
=19/30
work done by A and B together in one day
=1/15+1/12
=9/60
so,remaining work completed by A and B in no. of days
=19/30÷9/60
=19/30×60/9
=38/9
=4+ 2/9 that is 4 whole 2/9 days
hope the answer is right and help you
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