Mathematics

Mathematics, 17.11.2020 05:20, moonk7733

A car wash has two employees on duty. Employee I can finish washing a car in 30 minutes.
Employee 2 can finish washing a car in 20 minutes.
.
How long will it take the tiro employees to wash a car together?

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A car wash has two employees on duty. Employee I can finish washing a car in 30 minutes.
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