A bus and a car start from the same point in opposite directions. The car's speed is 10 km/h more than the bus's speed. After 3 hours they are 270 km apart. Find the speed of the bus (in km/h).
Class 8Word ProblemsLinear Equations
A35
B40
C45
D50
Step-by-Step Solution
Bus speed = x, car speed = x+10. In 3 h, distance apart = 3x+3(x+10)=6x+30=270,6x=240,x=40 km/h.
Answer: B) 40
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