Question

a recipe calls for 6 cups water and 4 cups of flour.if the recipe is increased,how many cups of water should be used with 6 cups of flour

Answer 1

The ratio is 6w = 4f.
Multiply both sides by 3/2 to get 6 cups of flour, and we have:
6*3/2 w = 4 * 3/2 f
18/2 w = 12/2 f
9 w = 6 f
So 9 cups of water.