Question

If 18 men do a work in 15 days then in how many days will 60 men complete
twice the work?​

Answer 1

if 18 man can do in 15 days

then one man can do in 15 × 18 days

then 60 men can complete in 15 x 18/60 = 4.5 days

so 60 men can finish twice the work in 4.5×2= 9days