Question

Andres completed a 5-km race in 13.5 minutes. His sister’s time was 1 and 1/2 times longer than his time. How long, in minutes, did it take his sister to run the race?

Answer 1

20.25 minutes.

Explanation:

We have been given that Andres completed a 5-km race in 13.5 minutes. His sister’s time was 1 and 1/2 times longer than his time.

To find time taken by Andres's sister, we will multiply 13.5 by 1 and 1/2.

`\text{time taken by Andres's sister}=1(1)/(2)* 13.5\text{ min}`

`\text{time taken by Andres's sister}=(3)/(2)* 13.5\text{ min}`

`\text{time taken by Andres's sister}=1.5* 13.5\text{ min}`

`\text{time taken by Andres's sister}=20.25\text{ min}`

Therefore, it will take Andres's sister 20.25 minutes to run the race.