The first painter painted the fence himself for 4 hours, the second painter 1.2 hours sooner than the first, and the third painter slowest up to 16 hours.

How long took them to paint the fence if they worked together?

Correct answer:

x =  1.4933 h

Step-by-step explanation:

x · (1/4+1/(4-1.2)+1/16) = 1

10.714286x = 16

x = 16/10.71428571 = 1.49333333

x = 112/75 ≈ 1.493333

Our simple equation calculator calculates it.

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