Five friends went to a restaurant and agreed to share the bill equally. however, one person forgot his wallet, so the other four friends' portions of the bill went up by $\$4$ each. how many dollars was the total bill?

5 people but one person forgot money

4 people had to pay 4 $ to cover for the guy, so that would mean one person had to pay 16 $. 16*5 to get the total amount, so the answer would be

80 dollars

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