Question

Which rates are equivalent to 9 miles in 45 minutes

Answer 1

hi

let's remind us that 1 hour = 60 minutes.

9 miles in 45 minutes means :

9 = 45

? = 60

so ? = 9*60 /45

= 3*3 *20*3 / 3*3 *5

= 3*3 *5*4 *3 / 3*3 *5

= 4*3

= 12

So 9 miles in 45 minutes is 12 miles an hour.