SOLUTION: The nutritional chart on the side of the box of breakfast cereal states that there are 120 calories in a 1 1/3 cup serving. How many calories are there in 7 cups of the cereal?

Algebra ->  Proportions -> SOLUTION: The nutritional chart on the side of the box of breakfast cereal states that there are 120 calories in a 1 1/3 cup serving. How many calories are there in 7 cups of the cereal?       Log On


   

Question 763274: The nutritional chart on the side of the box of breakfast cereal states that there are 120 calories in a 1 1/3 cup serving. How many calories are there in 7 cups of the cereal?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
1 1/3 is 4/3 serving
Let +c+ = calories
Set up a ratio:
+120+%2F+%28+4%2F3%29+=+c+%2F+7+
Multiply both sides by +%284%2F3%29%2A7+
+7%2A120+=+%284%2F3%29%2Ac+
Multiply both sides by +3%2F4+
+c+=+%28+3%2F4%29%2A7%2A120+
+c+=+630+
There are 630 calories in 7 cups of cereal