SOLUTION: Hi Car A left P for Q and had covered 3/8 of its journey when it passed car Bwhich was travelling at 60km per hour. Car A reached Q 35 minutes later and Car B was still 35 km away

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Question 1186793: Hi
Car A left P for Q and had covered 3/8 of its journey when it passed car Bwhich was travelling at 60km per hour. Car A reached Q 35 minutes later and Car B was still 35 km away from Q. Assuming their speeds to be constant throughout the whole trip, how long did it take Car B to travel from P to Q.
Thanks
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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Car A left P for Q and had covered 3/8 of its journey when it passed car B which was travelling at 60km per hour.
Car A reached Q 35 minutes later and Car B was still 35 km away from Q.
Assuming their speeds to be constant throughout the whole trip, how long did it take Car B to travel from P to Q.
:
Find the dist (5/8 of PQ dist) from where the cars were at the same point to Q
Car B travels a km a min (60 km/h) so it would travel 35 km while A traveled to Q
In 35 min B was still 35 km away so it must be 70 km from that point to Q
Let d = dist from P to Q
5%2F8d = 70
5d = 8*70
d = 560/5
d = 112 km from P To Q
"How long did it take Car B to travel from P to Q."
B travels a km a min, it would take 112 min or 1 hr 52 min
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