atomickitten atomickitten

31-03-2017
Mathematics

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Amiri can deliver his newspapers in 85 minutes. It takes Horus 65 minutes to do the same route. How long would it take them to deliver the newspapers if they work together?

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Аноним Аноним

31-03-2017

(1/85)x + (1/65)x = 1
65x + 85x = 5525
150x = 5525
x = 36 5/6 minutes or 36 minutes and 50 seconds.

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