Question

if 15 men working 12 hours per day perform a job in 16 days, how long will it take 21 men working 10 hours daily to do the same task ?
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Answer 1

1. Answer:

4 days

Step-by-step explanation:

1. men=15 .hours worked=12. days =16. 2.men = 21,hours work =10,days=x therefore, 15×12×16=21×10×x. 15×12×16/21×10=x . by simplification we get 4

Answer 2

Answer:

Step-by-step explanation:

15 x  12 x 16=1080+10=1090

21 x  x=21x

1090÷21

x=51·904