David can run 7.5 miles in 1.5 hours. What is David's rate of speed in miles per
hour?

5

Step-by-step explanation:

You are trying to find the amount per hour, so what would be easiest to do would be to divide 7.5 by 1.5, which gets you 5, and to check your work, if you multiply 5 by 1.5, you get 7.5.

your answer is d 2,500

step-by-step explanation:

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.