Question

8 men working at the same constant rate complete a job in 12 days. How many additional machines working at same rate will be needed to
complete the job in 8 days?

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Answer 1

Given info : 8 men working at the same constant rate complete a job in 12 days.

To find : how many additional men working at the same rate will be needed to complete the job in 8 days ?

solution : using forming, M₁D₁ = M₂D₂

M₁ = 8 , D₁ = 12

let number of men added to complete the work in 8 days, is x.

so, M₂ = (8 + x) , D₂ = 8

now, 8 × 12 = (8 + x) × 8

⇒12 = 8 + x

⇒x = 4

Therefore 4 additional men will be needed to complete the job in 8 days.

Answer 2

Answer:

Your answer in attachment

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