Question

A car can complete a journey in 12 hours at a speed of 60 km/hr. By how much should
its speed be increased so that it takes only 10 hours to cover the same distance?​

Answer 1

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A car can complete a journey in 12 hours at a speed of 60 km/hr. By how much should its speed be increased so that it takes only 10 hours to cover the same distance?

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In 12hrs, the car can reaches a certain distance at speed of 60Km/hrs.

i.e. in 1 hrs the car can reaches the same distance at speed of (12×60)Km/hrs=720Km/hrs.

So, in 10hrs the car can reaches the same distance at speed of (720/10)Km/hrs=72Km/hrs.

Thus, the speed of car should be increased by (72–60)Km/hrs=12Km/hrs.

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BE BRAINLY ☃️⚡

Answer 2

Answer:

In 12hrs, the car can reaches a certain distance at speed of 60Km/hrs.

i.e. in 1 hrs the car can reaches the same distance at speed of (12×60)Km/hrs=720Km/hrs.

So, in 10hrs the car can reaches the same distance at speed of (720/10)Km/hrs=72Km/hrs.

Thus, the speed of car should be increased by (72–60)Km/hrs=12Km/hrs.

HOPE THIS HELPS ❤️☺️