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Working together, Laetitia and Ian can paint a room in 1 hour 12 minut
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26 Oct 2021, 02:06
26 Oct 2021, 02:06
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Working together, Laetitia and Ian can paint a room in 1 hour 12 minutes. Working alone, Laetitia can paint the room in 3 hours. How many hours would it take Ian to paint the room working alone?
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2 hours
See more on these concepts our GRE Quant Book and the GRE Math Essentials project
Re: Working together, Laetitia and Ian can paint a room in 1 hour 12 minut
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26 Oct 2021, 19:46
26 Oct 2021, 19:46
1
Together,
\(L + I = 1\frac{1}{5} = \frac{6}{5}\) hours
\(L = 3\) hours
\(\frac{1}{3} + \frac{1}{I} = \frac{5}{6}\)
\(\frac{5}{6} - \frac{1}{3} = \frac{1}{I}\)
\(I = 2\) hours
\(L + I = 1\frac{1}{5} = \frac{6}{5}\) hours
\(L = 3\) hours
\(\frac{1}{3} + \frac{1}{I} = \frac{5}{6}\)
\(\frac{5}{6} - \frac{1}{3} = \frac{1}{I}\)
\(I = 2\) hours
Re: Working together, Laetitia and Ian can paint a room in 1 hour 12 minut
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25 Jul 2023, 10:32
25 Jul 2023, 10:32
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