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# Al washed a car in 6 minutes.

## Fred washes the same car in 8 min. How long dies it take Al and Fr...

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### Al washed a car in 6 minutes.

Fred washes the same car in 8 min.
How long dies it take Al and Fred to wash the car together?

$$In\ 1min\ Al\ wash\ \frac{1}{6}\ car. \\In\ 1min\ Fred\ wash\ \frac{1}{8}\ car\\\\Together\ in\ 1\frac{1}{6}+\frac{1}{8}=\frac{4}{24}+\frac{3}{24}=\frac{7}{24}\ car\\\\\ and\ Fred\ wash\ the\ car\ in\ \frac{24}{7}min=3\frac{3}{7}min\approx3.5min$$