Question

A toy company requires 36 machines to produce car toys in 54 days. How many machines would be required to produce the same number of car toys in 81 days?

Answer 1

Let the required number of machines be x

Number of machines	36	x
Number of days	54	81

As the number of machines increases number of days required decreases.

∴ They are in inverse proportion x₁y₁ = x₂y₂

36 x 54 = x (x) 81

∴ 24 machines would be required.