Karl participated in a two-day charity walk. his parents donated money for each mile he walked. karl walked 3 3/4 miles on the first day and 5 1/2 miles on the second day. his parents donated $175. how much money did his parents pay for each mile?

amount paid for each mile = $ 18.9189189189  

Step-by-step explanation:

The total miles he walked on the 2 days charity walk is the sum of the first day  walk and the second day walk.

total miles = 3 3/4 + 5 1/2

total miles = 15/4 + 11/2

total miles = (15 + 22)/4

total miles = 37/4

total miles = 37/4 miles

The amount of money paid for each miles can be computed as follows:

amount paid for each mile = 175 ÷ 37/4

amount paid for each mile = 175 × 4/37

amount paid for each mile = 700 /37

amount paid for each mile = $ 18.9189189189  

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6