Question

a can do piece work in 3 days and B can do in 4 days they both can dinin

Answer 1

1/4 +1/3= 3+4/12
7/12 .answer.
means 7/12*24 = 14
ans. a and b can work done in 14 hours

Answer 2

A' s 1 day work = 1/3

B's 1 day work = 1/4

(A+B)' s 1day work = 1/3+1/4

=7/12
both can do the work in 12/7 days

1 day 5/7 *24 hours

1 day 17 hours

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