Answer :
The number of tablespoons of butter needed is 7 1 / 2 .
How to find the number of tablespoon of butter he needs?
Ami has a recipe that calls for 1 1 / 4 tablespoons of butter for every 2 1 / 2 cups of water.
Ami increases the recipe and uses 15 cups of water. Therefore, the amount of tablespoons of butter required can be calculated as follows:
Hence,
2 1 / 2 cups of water = 1 1 / 4 tablespoons of butter
15 cups of water = ?
cross multiply
Therefore,
amount of tablespoons of butter = 15 × 1 1 / 4 ÷ 2 1 / 2
amount of tablespoons of butter = 15 × 5 / 4 ÷ 5 / 2
amount of tablespoons of butter = 15 × 5 / 4 × 2 / 5
amount of tablespoons of butter = 30 / 4
amount of tablespoons of butter = 15 / 2 = 7 1 / 2 tablespoons of butter
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