Question

W usng a calculator, paper and pencil, or mental math.

Answer 1

Answer:

Mandy will take 67.5 mins to complete the 15 km race.

Step-by-step explanation:

Given:

Mandy runs 4 km in 18 min

She plans to run in a 15 km race.

We need to find how much time required to run 15 km.

4 km =18 min

15 km = time required for 15 km race

By Using Unitary method we get,

Time required for 15 km = $\frac{18\times 15}{4}=67.5 mins$

Hence time required by Mandy to complete 15 km race is 67.5 mins.