A bus moving at a speed of 90 km/h requires 2 hours to reach city A from city B. How much time would it require if speed is 120 km/h? How much time would a car travelling at the speed of 50 km/h require to reach the city A from the city B?
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Step-by-step explanation:
90 km/h in 2 hr
1 km/h in 2 / 90 hr
120 km/h in (2/90)*(120)= 2.6 hr
50 km/h in (2/90)*(50)= 1.1 hr
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