A baker is looking for a recipe that has the lowest unit rate for flour per batch of muffins. Which recipe should she use?

A

1

2

cup flour for

2

3

batch

B

1

3

cup flour for

1

4

batch

C

2

3

cup flour for

1

2

batch

D

3

4

cup flour for

2

3

batch

Ok so to find best price, find cost per unit or unit rate

so what we do is

(amount of flower x batches) / x and divide out

when dividng fractions, just invert the second one and multiply, example

3/4 divided by 5/6=3/4 times 6/5=18/20 so

A. 1/2 cup for 2/3, (1/2) / (2/3), 1/2 times 3/2, 3/4 cup per batch

B. 1/3 per 1/4 batch, (1/3) / (1/4), 1/3 times 4/1, 4/3 cup per batch=1 and 1/3

C. 2/3 cup for 1/2 batch, (2/3) / (1/2), 2/3 times 2/1, 4/3 cp per batch=1 and 1/3

D. 3/4 cup per 2/3 batch, (3/4) / (2/3), 3/4 times 3/2, 9/8 cup per batch=1 and 18/

lowest unit rate is 3/4 cup per batch since others are greater than 1

answer is A