SAT Linear equations in two variables Practice Question 12 (Medium)

Question bank / Linear equations in two variables

Math · AlgebraMedium

A baker uses $2.5$ cups of flour for each loaf of bread and $0.75$ cup of flour for each batch of muffins. One day she used exactly $40$ cups of flour and baked $10$ loaves of bread. How many batches of muffins did she bake?

$6$

$15$

$20$

$25$

Show answer and explanation

Answer: C

The flour equation is $2.5(10) + 0.75m = 40$ . Then $25 + 0.75m = 40$ , so $0.75m = 15$ and $m = 20$ .

Choice B is the number of cups left for muffins, not the number of batches.

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