Question

If 3 men can dig a 3 x 2 x 4 meter hole in 20 minutes, how long will it take 6 men to dig a 4 x 4 x 3 meter hole?
5 minutes
10 minutes

Answer 1

Answer:

20

Step-by-step explanation:

Given If 3 men can dig a 3 x 2 x 4 meter hole in 20 minutes, how long will it take 6 men to dig a 4 x 4 x 3 meter hole?

Now 3 men will dig 24 m^3 in 20 minutes

So we need to find 6 men will dig 48 m^3 in ?

We will consider as 3 men, so

3 men will dig 24 m^3 in 20 min

same 3 men will dig 48 m^3 in 48 x 20 / 24 = 40 min

Therefore 3 men will dig in 40 min

               6 men will dig in 3 x 40 /6

                          120 / 6 = 20 min

Answer 2

Answer:

If 3 men can dig a 3 x 2 x 4 meter hole in 20 minutes, then 6 men will take to dig a 4 x 4 x 3 meter hole  = 20 mins

Step-by-step explanation:

3 men can dig a 3 x 2 x 4 meter hole in 20 minutes,

3 * 2 * 4 = 24 m³

3 man can dig 24 m³ in 20 minutes

1 man can dig  24 m³ in 20 * 3

6 men can dig 24 m³ in 20*3/6 = 10 mins

6 man can dig 1 m³ in = 10/24 mins

to be dig = 4 * 4 * 3 = 48 m³

6 man can dig 48 m³ in = (10/24) * 48 = 20 mins