Question

If a car increases its speed from 100 km/hr to 110 km/hr in one second, find the increase in speed in percentage.

• A. 5%
• B. 10%
• C. 15%
• D. 20%

Answer 1

The correct option is B 10%

Initial speed = 100 km/hr.
Final speed after 1 second = 110 km/hr.
So, percentage increase
$=\frac{110-100}{100}\times 100\%$
$=\frac{10}{100}\times 100\%$
$=10\%$