Question: A car covers a distance of 900 km in 10 hours. If the speed had been 150 km/h, the journey would have taken 6 hours. What is the actual speed of the car?
a) 80 km/h
b) 85 km/h
c) 90 km/h
d) 95 km/h
Solution:
Let the actual speed of the car be x km/h.
Time taken at speed x:
900⁄x = 10
x = 900⁄10 = 90 km/h
Hence, the actual speed of the car is 90 km/h.
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