Mike*s father asked him to cut the grass of the sguare field behind…

Задание:

Mike*s father asked him to cut the grass of the sguare field behind ther house. It look Mike 90 minutes to do the left side. 90 minutes to do the topand 90 minutes to do the right side.But it tokk him 1 hour and a half tot do the bottom. Why?

Решение:

90 minutes — 1 hour and a half 90 мин равно 1,5 час

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