Question

if 51 men can do a piece of work in 35 days then 21 men will complete the same work in how many days?​

Answer 1

Answer:

15 days..................

Answer 2

51 men can complete the work in 35 days

1 man can complete the work in (35 x 51) days

$Therefore, 21 \: men \: \\ can \: complete \: the \: work \: in \frac{35 \times 51}{21}$

$\frac{35 \times 51}{21} \\ = 85 \: days$