Problema Solution
Car X and Car Y are traveling on the same route at constant speeds. Car X is initially behind Car Y, but Car X speeds is 1. 25 times Car Y speed. Car X passes Car Y at 1:30pm. At 3:15pm Car X reaches point B and Car Y is still 35 miles away. What is speed of Car X
Answer provided by our tutors
Let
v = the speed of Car Y
1.25v = the speed of Car X
t = 3:15 pm - 1:30 pm = 1 hr 45 min = 1.75 hr the time of the travel
1.25v*t = v*t + 35
1.25*1.75v = 1.75v + 35
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click here to see the equation solved for v
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v = 80 mph
1.25v = 1.25*80 = 100 mph
The speed of Car X is 100 mph.