Question

A jogger runs a rate of 9 kilometers per hour. How long will it take to run 12 kilometers

Answer 1

Hello!

Answer:

`\Large \boxed{\sf 1~hour~and~20~minutes}`

Explanation:

Here is our statement translated into a table:

distance (km) 9 12

time (minutes) 60 x

We want the value of x.

We have the method of the cross:

a c

b x

`\sf x = b * c / a`

So, let's apply the method of the cross:

`\sf x = 60 * 12 / 9 = 720 / 9 = 80~minutes = \boxed{\sf 1~hour~and~20~minutes}`