Question

15 workers take 8 hour to build a wall how many will 12 workers need to build the same wall

Answer 1

Answer:

22.5 hours

Step-by-step explanation:

15 workers take 8 hour

1 worker takes =15

8

so, 12 workers takes= 15/8×12

=15/2×3

= 45/2

22.5 hours