A can do a piece of work in 10 days, B in 15 days. Both of them worked for 3 days and left. Remaining work is done by C for how many days.
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Step-by-step explanation:
A can do a work in 10 days.
B can do same work in 15 days.
LCM of 10 and 15 is 30.
A=30/10
=3 work per day.
B=30/15
=2 work per day.
A and B’s one day work is=3+2
=5 work per day.
A and B worked for 2 days=5*2
=10 work.
Remaining work is=30–10
=20 work.
A left and B complete the remaining work.
B=20/2
=10 days.
A’ total work is 6 and B’s total work is 24.
A:B=6:24
A:B=1:4
Total amount=150
Share of B is=150*4/5
=30*4
=120 Rs.
B’s share is Rs. 120.
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