Question

You normally drive on the free way between kidapawan and davao at an average speed of 105km/hr (65mi/hr) and the trip takes 2hr and 20minutes on a friday afternoon,however heavy traffic slows you down and you drive the same distance an average speed of only 70km/hr (50mi/hr. How much longer does the trip take? How to solve this problem?
bobpursley
find the distance from the first given.
d=r*t
then, you know the distance, so in the question solve for t.
t=d/r

Now compare the times..how much longer did it take?

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