A Car Takes 6 Hours to Reach a Destination by Travelling at a Speed of 50 Km per Hour. How Long Will It Take When the Car Travels at a Speed of 75 Km per Hour? - Mathematics
A car takes 6 hours to reach a destination by travelling at a speed of 50 km per hour. How long will it take when the car travels at a speed of 75 km per hour?
Time: Distance:: Time: Distance
6 : 50 km :: x : 75
∴ By inverse proportion
6 × 50 = x × 75
= 4 hours
Concept: Time and Work
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Chapter 10: Direct and Inverse Variations - Exercise 10 (B) [Page 123]