Question

Ravi can finish a piece of work in 21 days and
Prem can finish the same work in half the
time taken by Ravi. If they work together then,
what part of the same work can they finish in
a day?​

Answer 1

Answer:

1/7 of aday

Step-by-step explanation:

A's one day work =1/21

B's one day work= 2/21

(A+B) one day work,

1/21+2/21= 1/7