A soup recipe serves 6 people and needs 4 cups of broth. If you want to serve 9 people, how much broth do you need?
Answer
6 cups
How to solve it
1
Original servings: 6
2
New servings: 9
3
Scale factor: 9 ÷ 6 = 1.5
4
Broth needed: 4 × 1.5 = 6 cups
Hints
Find scale factor
Multiply ingredient by factor