Algebrahard · Past Paper
Points A and B are 100 km apart on a highway. One car starts from A and another from B at the same time. If they travel in the same direction, they meet in 5 hours. If they travel towards each other, they meet in 1 hour. What is the speed of the faster car?
A60 km/h
B40 km/h
C50 km/h
D70 km/h
✓ Correct Answer: A — 60 km/h
Let speeds be x and y. 5(x-y)=100 -> x-y=20. 1(x+y)=100 -> x+y=100. Adding gives 2x=120, x=60.
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