A car can cover a distance of 18 km in 24 minutes. The speed of a bus is twice that of the car. In how many minutes can the bus cover a distance of 135 km?
Speed of car = $$\frac{18}{24}$$ km/min
Speed of bus = $$\frac{2 \times 18}{24}$$ km/min =$$\frac{3}{2}$$ km/hr
Bus will take $$\frac{135 \times 2}{3}$$ = 45 minutes.
So , the answer would be option b)90 minutes.
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