Mathematics, 27.09.2019 13:30, kirstenturkington

Andres completed a 5-km race in 13.5 minutes. his sister’s time was 1 and 1/2 times longer than his time. how long, in minutes, did it take his sister to run the race?

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Andres completed a 5-km race in 13.5 minutes. his sister’s time was 1 and 1/2 times longer than his...