Question

A recipe called for the ratio of sugar to four to be 10:3.if you used 70 ounces of sugar how many Ounces of sugar what do you need to use.

Answer 1

21 is needed to complete the ratio

Answer 2

Assuming that the question is supposed to say "how many many ounces of flour do you need to use," the answer would be 21 ounces. 

The way that I would go about solving this problem would be using cross multiplication. 

To do this you do the following: 

$\frac{10}{3} = \frac{70}{x}$
10x = 3(70)
10x= 210
10x/10 = 210/10
x= 21