Mathematics, 04.08.2019 01:30 AM28
15 : kerri drives $150$ miles to visit her grandmother. she starts off driving $60$ miles per hour, but then encounters road construction and has to drive $20$ miles per hour the rest of the way. if she spends the same amount of time at the faster speed as at the slower speed, then how many hours did her $150$-mile trip take in total?
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15 : kerri drives $150$ miles to visit her grandmother. she starts off driving $60$ miles per hour,...
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