Question

If 5 men take time do a work is 5 day
the 10 men done same work in how many days?








aastha answer this​

Answer 1

Answer:

the 10 men can do same work in 2.5 days

Answer 2

If A and B can together finish it in t days with A and B finishing the work in a and b days respectively,

1/a + 1/b = 1/t

Calculation:

Time taken by 5 men = 10 days

⇒ 1 man = 50 days

⇒ 1 man per day work = 1/50

Now,

Time taken by 10 boys = 5 days

⇒ 1 boy = 50 days

⇒ 1 boy per day work = 1/50

ATQ,

10m + 2b = 10 × 1/50 + 2 × 1/50 = 6/25 = 25/6 days