Question

if 12 men complete a piece of work in 20 days in how many days would 15 men complete the same work

Answer 1

Answer:

16 DAYS

Step-by-step explanation:

It would take 16 days. You can’t use proportions because 12 men finishing something in 20 days is not equal to 6 men finishing in 10 days. How you would calculate this is by doing 12 men times 20 days. You’re answer is 240.

For the 15 men, take 240/15 and you will get 16. To prove this correctly let’s say there are 240 parts of the project and each guy can do 1 per day. 12 men would take 20 days and 15 men would take 16 days.

Answer 2

Answer:

16 days

Step By Step Explanation:

Let the required number of working days be x.

Here, the number of men and their working days are in inverse proportion.

∴ 12 : 15 = x : 20

⇒ 12 / 15 = x / 15

⇒ 15x = 12 × 20

⇒ x = 240 / 15

⇒ x = 16 days

Hence, the required number of working days is 16 days.