A runner is running at a speed of 40 km/h. If he runs at a speed of 30 km/h, then what will the decrease in the percentage of his speed be?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e 25%
| Understanding/Application |
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Initial speed = 40 km/h Final speed = 30 km/h Decrement = 40 km/h - 30 km/h = 10 km/h Percentage = (10 km/h)/(40 km/h) x 100 = 25% |