Mathematics, 13.01.2020 22:31 animaljamissofab

50
leanne can clean a fish tank in 30 minutes. karl can clean a fish tank in 20 minutes. if they work together, how many minutes does it take them to clean a fish tank?

a)6 minutes
b)10 minutes
c)12 minutes
d)50 minutes

Answers: 3

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50
leanne can clean a fish tank in 30 minutes. karl can clean a fish tank in 20 minutes. if t...