Question

Double questions, double points.

Answer 1

18. 1 to 4

Explanation:

18.

Areas = pi 2² : pi 4² = 4 : 16 = 1 : 4

1 to 4

19.

25 % = 125 oz

1 % = 125 ÷ 25 = 5 oz

To make it 10%, it needs to be reduced by 15%

15 % = 5 × 15 = 75 oz. I think it's impossible to do?