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03-04-2018
Mathematics

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Beverly can drive 600 miles in the same time as it takes Susan to drive 500 miles. If Beverly drives 10 mph faster than Susan, then how fast does Beverly drive?

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zrh2sfo zrh2sfo

03-04-2018

t = D/rtimes the sameBev = Susan's time600mi/r+10 = 500mi/r
600r = 500r + 5000100r = 5000r = 50mph, Susan's speed. Beverly's is 60 mph 50+10And...checking600/60 = 500/50 = 10hr

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myathed0ll myathed0ll

03-04-2018

600/x +10 =500/x Cross multiply.
600x=5000+500x
100x=5000
X=50
50+10=60
Check work. Beverly drives 60mph

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