Question

If 5 men paint a wall in 3hours,

How many men will paint the same wall in 3/4 hours,
working at the same rate
a)5
b)10
c)15
d)20
e)24​

Answer 1

20 men will paint the same wall in 3/4 hours.

Explanation:

Given information is:

5 men paint a wall in 3 hours

Let x be the number of men

It is also mentioned that the rate will be same with x men. So we have to put both the rates/proportions equivalent to find the number of men.

So,

`men * hours = men*hours\\5*3 = x*(3)/(4)\\15 = (3)/(4)x\\x = (4)/(3) * 15\\x = 20`

Hence,

20 men will paint the same wall in 3/4 hours.