Question

a desert recipe calls for 3 cups of flour and 1 cup of sugar.It serves 4 people if the recipe must be altered to serve 12 people , how many cups of flour Wil be needed

Answer 1

4 times what=12
divide by 4
what=3

multiply everything by 3
originally we needed 3 cups flower
we ned 3 times of that or 3*3=9

9 cups needed