3 years ago

Hi, I need help with this problem. I already know the answer (40mph) but I don't know how I solved it.

1 answer:

6 0

Let's say the father does overtake the boy, the boy would have been travelling for 1 hour and 15 minutes at 8mph, therefor he would have travelled a total of 1.25*8 = 10 m
Now to reach the boy in 15 minutes the father must travel at a speed of 10/0.25 = 40 mph

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