Asked by zamarra
A man drove 48 more miles an hour than the number of hours he drove. if he drove 208 miles in all, how many hours did he drive? What was his rate?
Answers
Answered by
Steve
if he drove x hours, his speed was x+48
distance = speed * time, so
(x+48)(x) = 208
x^2 + 48x - 208 = 0
(x-4)(x+52)
x=4
so, he drove 52 mph for 4 hours
distance = speed * time, so
(x+48)(x) = 208
x^2 + 48x - 208 = 0
(x-4)(x+52)
x=4
so, he drove 52 mph for 4 hours
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