Question

A can complete a piece of work in 8 hours, b can complete in10 hours and c in 12 hours. If a,b, c start the work togetherbut a laves after 2 hours. Find the time taken by b and c tocomplete the remaining work.

Answer 1

B taken 7hour and 30mintues to complete remainig work
C taken 9 hour ro complete remaining work

Answer 2

A,B,C 1 hour work is=1/8+1/10+12= 37/120
A,B,C work together for 2 hours, so,A,B,C 2 hours work is: (37/120)*2=37/60
remaining work=1-37/60=23/60 (23/60 work is done by B and C together)
B,C 1 hour work is= 1/10+1/12=11/60
23/60 hours work done by B,C= (11/60)* (60/23)=11/23
so... ans is: 2(1/11)4 years agoHelpfull: Yes(53) No(6)