Question

3men build a wall in 10 hour .how many men will be needed to build a wall in 7.5 hours

Answer 1

Answer:

4 men

Step-by-step explanation:

time needed is inversely proportional to man hired.

hence, men is proportional to (1/time required)

so, 3*10 = 7.5*x. (x is men required)

x = 4.

Hence, 4 men can complete the work in 7.5 hours.

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