John collected half a bucket of raspberries in 45 minutes, and Eva collected the whole bucket in an hour.

How many minutes would it take to fill a bucket if the two children worked together?

Correct answer:

t =  36 min

Step-by-step explanation:

t/(2·45)+t/60 = 1

1.666667t = 60

t = 60/1.66666667 = 36

t = 36

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