Question

Two men undertook to do a job for Rs 1400. One of them alone can do it in 7days and the other in 8 days. With the assistance of a boy, they together completed the work in 3 days. How much money will the boy get?

A. 200
B. 250
C.275
D.325
E.None of the​

Answer 1

Answer:

275

Step-by-step explanation:

Boy's efflciency = Total eff.−eff. ofA+B

=56−(24+21) = 11

For 56 units (A + B + Boy) get Rs.1400

∴1 units(A+B+Boy) = Rs.25

boy get 11 units =25×11 = Rs.275