An 9-ounce bag of rice noodles makes 10 servings. At that​ rate, find how many ounces of noodles are needed for 13 ​servings, to the nearest ounce.

Answer 1

The first ratio is 9/10

The second ratio is x/13

Set up a proportion to compare the ratios and cross multiply to solve

9/10=x/13

10x=117

/10 /10

x=117/10

x=11.7

rounded to the nearest oz it would be 12