In a coin jar the ratio of dimes to pennies is 3 to 8 . the number of pennies is 32. why can't the number of dimes be 10

12 dimes is the correct answer. 10 dimes doesn’t fit the 3:8 ratio given for 32 pennies.

Step-by-step explanation:

gdp is the best phrase!

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