Question

if 3 workers can build wall in 36 hours,how many workers may required to do same work in 9 hours..
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Answer 1

Answer:

In 36 hours workers required=3

in 1 hours workers required=36*3

in 9 hours workers required=36*3/9=12

Answer 2

Step-by-step explanation:

m1h1d1/w1= m2h2d2/w2

here m1=3,h1=36,d1=1(by default) ,w1=w2 because work is same

h2=9,m2=x,d2=1

so, 3*36*1/w1=x*9*1/w2

3*36=x*9

x=12

so number of workers are 12