Question

Tina travels 10 km in 2 hr on her bicycle. At what speed should she travel to reduce her travel time by 1 hr?

• A. 20 km/hr
• B. 5 km/hr
• C. 10 km/hr
• D. 15 km/hr

Answer 1

The correct option is C

10 km/hr

Given,
Tina takes 2 hrs to travel 10km.

If she wants to reduce her travel time by 1hr, time taken for journey = $2-1=1\text{hr}$

$\text{Speed}=\frac{\text{Distance}}{\text{Time}}=\frac{10}{1}=10\text{km/hr}$

Therefore, Tina should travel at a speed of 10 km/hr to complete her journey in 1 hr.