Question

The speed of a car is 25% more than that of a bike. If the time taken by the car to cover (3x + 20) km is equal to the time taken by the bike to cover (2x + 40) km. If the speed of a bus is 60 km/hr, then find the time taken by it to cover (x + 120) km.

Q: Answer-The speed of a car is 25% more than that of a bike. If the time taken by the car to cover (3x + 20)...

Let the speed of bike be a kmhr Therefore, speed of car 1.25a kmhr According to the question, 3x 201.25a 2x 40a Or, 3x 20 2.5x 50 Or, 0.5x 30 Or, x 300.5 60 Therefore, x 120 60 120 180 Required time taken 18060 3 hours

A 2.5 hours

B 3.0 hours

C 4.2 hours

D 3.5 hours

E 2.8 hours

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The speed of a car is 25% more than that of a bike. If the time taken by the car to cover (3x + 20) km is equal to the time taken by the bike to cover (2x + 40) km. If the speed of a bus is 60 km/hr, then find the time taken by it to cover (x + 120) km.

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