Answer:
21 ounces
Step-by-step explanation:
We will set up a proportion for this problem. First we use the ratio we are given of sugar to flour:
10/3
The second ratio will be int he same format, sugar to flour. We know we are using 70 ounces of sugar, and an unknown amount of flour (we will use x):
70/x
This gives us the proportion
10/3 = 70/x
Cross-multiply:
10(x) = 3(70)
10x = 210
Divide both sides by 10:
10x/10 = 210/10
x = 21
