Question

Avishek is running with a speed 10 km/hr. By how much presentage has to increase ed his speed so that he can cover 120 km in 2 hr less​

Answer 1

Answer:

I am sorry but I want points

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Initial speed of abhishek =10km/hr

That means he cover 10km in 1hr

A/Q

Time taken by abhishek to cover 120km

Using unitary methods :–

10km cover in 1hr

1km cover in 1/10hr

120km cover in (1/10X120)hrs=12hrs

Then two hrs less(12-2)hrs=10hrs

Distance =120km

Time =10hrs

Speed=120km/10hrs=12km/h

So,

Increased in his speed=(12km/h–10km/h)

=2km/h

Increased in %=2km/hr/10km/hrX100=20%

So percentage increased in his speed =20%