Question

13. Becky and Scott rode their bicycles to school. Becky rode 8 km in 15 min., while Scott rode 12 km in

Answer 1

Step-by-step explanation:

Calculate their speed to see who rode faster.

Speed = Distance ÷ Time

Change the unit from minutes to hours so that the answers are in km/h.

Becky's speed

$= 8 \div \frac{15}{60}$

$= 8 \div 0.25$

= 32 km/h

Scott's speed

$= 12 \div \frac{25}{60}$

$= 12 \div 0.41666...$

= 28.8 km/h (rounded to the nearest tenth)

∵ 32 km/h > 28.8 km/h

∴ Becky rode faster.