Johnny is baking muffins. The recipe calls for 1.5 cups of flour for every 1 cup of sugar. Johnny only has 0.5 cups of sugar, how much flour should he add to his recipe?

0.75 cups of flour

Step-by-step explanation:

The recipe

1.5 cups flour - 1 cup sugar

Then

0.5 cups of sugar - ? cups of flour

You divide 1 cup into 2 to get 0.5 cups of sugar, which means the recipe is divided by half to bake the muffins. So,

1.5 divided by 2 gives you 0.75 cups of flour

(If my explanation was wrong, please correct me, Thanks :)

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