Question

the speed of a train is increased from 80 km/h to 120 km/s. Find the percentage increase?​

Answer 1

The speed of train increase by 50%

Step-by-step explanation:

The speed of a train is increased from 80 km/h to 120 km/s.

Initial Speed, u = 80 km/h

Final speed, v = 120 km/h

$\text{percentage increase}=\dfrac{\text{change in speed}}{\text{Initial speed}}\times 100$

$\text{percentage increase}=\dfrac{120-80}{80}\times 100$

$\text{percentage increase}=50\%$

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