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patriot [66]
3 years ago
5

The first painter can finish a paint job in 2 hours. The second painter can finish the same job in 8 hours. How long would it ta

ke them to finish the job if they were working together?
Mathematics
1 answer:
xxMikexx [17]3 years ago
3 0
1h 15minutes, I converted each time into fractions, 2hours to \frac{2}{2} and the 8hour to \frac{8}{8}, this means, painter #1 finishes 1/2 of the project in 1 hour, and paither #2 finishes 1/8 of project in 1 hour, now when we make each fraction out of 2 hours, so \frac{2}{2} and \frac{2}{8}, we add them and get \frac{10}{8}, then as mixed number, 1 1/4 which is 1 hour and 15min<em>(1/4 of a hour)</em> I believe im right.
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