Problema Solution
travel: a car travels 50 miles in the same time that a plane travels 180 miles. the speed of the plane is 143 mph faster than the speed of the car. find the speed of the car.
Answer provided by our tutors
let
v = the speed of the car, v>0
v + 143 = the speed of the plane
d1 = 50 mi the distance the car travels
d2 = 180 i the distance the plane travels
since speed=distance/time follows time = distance/speed
we know that the car and the plan travel the same amount of time thus we have:
d1/v = d2/(v + 143)
50/v = 180/(v + 143)
by solving we find:
v = 55 mph
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the speed of the car is 55 mph.