Gilda drove 650miles at an average speed of 50 miles per hour. how many miles per hour faster would she have had to drive in order for the trip to have 1 hour less?

Question

Syllable

Mathematics

24 May, 17:57

Gilda drove 650miles at an average speed of 50 miles per hour. how many miles per hour faster would she have had to drive in order for the trip to have 1 hour less?

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Stella Wu · Answer 1

T=650mi (hr/50mi) = 13 hr

t-1=12 hr

12=650 / (50+v) multiply both sides by 50+v

600+12v=650 subtract 600 from both sides

12v=50 divide both sides by 12

v=25/6 mph

v≈4.17mph