Question

20 men do a quarter part of a job in eight days. If the work needs to be completed in the next four days,
how many more men are needed to achieve the target?​

Answer 1

Answer:

use unitary method inversed variation

Step-by-step explanation:

I feel it is forty men

Answer 2

Answer:

Step-by-step explanation:

20 men - 8 days - 1/4 work =

 ? men - 4 days - 3/4 work

Answer :

20 men - 8 days - 1/4 work =

20 men - 8*3 days - 1/4*3 work =

20 men - 24 days - 3/4 work =

20*2 men - 24/2 days - 3/4 work =        

40 men - 12 days - 3/4 work =

40*3 men - 12/3 days - 3/4 work =

120 men - 4 days - 3/4 work =

There already are 20 men so,

120 - 20 = 100

So, more 100 men are needed to achieve the target.