Question

Claire and Malia are training for a race A)Claire runs 10 km in 1 hour. How many kilometers does she run in half an hour? In 2 1/2 hours? B)Malia runs 5 miles in 1 hour. How many miles does she run in half an hour? In 2 1/2 hours?

Answer 1

Explanation:

A)

Given Claire runs 10 km in 1 hour,

in half an hour, she runs half of 10km = 5km

In 2 1/2 hours, she run 2.5 times of 10km = 25km

B)

Given Malia runs 5 km in 1 hour,

in half an hour, she runs half of 10km = 2.5km

In 2 1/2 hours, she run 2.5 times of 5km = 12.5km

Answer 2

A) 5km, 25km B) 2.5km, 12.5km

Explanation:

A)Claire runs 10 km in 1 hour.

she runs 10/2=5km in 1/2 hour.

in 2 1/2, she runs 10*2 1/2=25km

B)Malia runs 5 miles in 1 hour.

she runs 5/2=2 1/2km in 1/2 hour.

in 2 1/2, she runs 5*2 1/2=12 1/2km