AFCAT Model Paper 4

Given,
4 men can complete a work in = 15 days
5 women can complete the same work in = 12 days
3 boys can complete the same work in = 20 days
Formula:
Total work = Efficiency × Time taken
Calculation:
Total work = 60
Efficiency of 4 men = 4 units/day
⇒ Efficiency of 1 man =

4

4

= 1 units/day
Efficiency of 5 women = 5 units/day
⇒ Efficiency of 1 woman =

5

5

= 1 unit/day
Efficiency of 3 boys = 3 units/day
⇒ Efficiency of 1 boys =

3

3

= 1 unit/day
Time taken by 1 man, 1 woman and 1 boy together to complete the work
⇒

60

(1+1+1)

=

60

3

=20 days
∴ The required time is 20 days.