Question

A recipe called for the ratio of sugar to flour to be 5 : 1. If you used 3 grams of sugar, how many grams of flour would you need to use?

Answer 1

ratio = 5:1
flour = 1x
sugar = 5x
sugar = 3 g
  5x= 3g
x=3/5
x=0.6

flour=0.6 grams

Answer 2

we know that product of mean=product of extremes.
so 5:1::3:x
so 5x=3
so x=3/5grams