Erin put 65 coins in the piggy bank. 48 of them were quarters and nickels that worth $5.20. 17 of them were dimes and pennies. How many quarters and nickels does she put in the piggy bank?

idk sry

step-by-step explanation:

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