You make oatmeal cookies and oatmeal bars for a bake sale. One batch of oatmeal cookies requires $c$ cups of oats, and one batch of oatmeal bars requires $b$ cups of oats. You make $X$ batches of oatmeal cookies and $Y$ batches of oatmeal bars. Which expression represents the total amount of oats (in cups) you need?
A. $X c+Y b$
B. $c+b$
C. $X+Y$
D. $\frac{X}{c}+\frac{Y}{b}$

Answer

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Answer

The final answer is: $\boxed{Xc + Yb}$

Steps

Step 1 ：Find the total amount of oats needed for making X batches of oatmeal cookies and Y batches of oatmeal bars: $Xc + Yb$

Step 2 ：The final answer is: $\boxed{Xc + Yb}$