Question

Fifteen workers take 8 hours to build a wall , How many hours will 12 workers need to build the same wall​

Answer 1

Answer:

10

Step-by-step explanation:

men days for building is 8*15 let's assume efficiency as X

8*15*x = building

now building = 12*t*x

building/15*8 = building / 12*t

t = 15*8 /12

t = 10