Question

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

Answer 1

Answer:

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