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.
Share this question
More from Algebra
- If P(x) = x^2 - 1, find P(P(1)).
- Solve for x: 1/(x+1) + 1/(x+2) = 2/(x+10). (Though simplified it involves x^2, certain forms at SEE level are treated via logic).
- Which of the following is equal to (x+y)^2 - (x-y)^2?
- What is the coefficient of x in the polynomial 3x^2 - 5x + 8?
- If 2x + 5 = 5x - 4, what is x?