SOLUTION: if I know a 12 ounce cup of coffee has 120 milligrams of caffeine how would I find out how much caffeine would be in a 16 ounce cup of coffee

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Question 804974: if I know a 12 ounce cup of coffee has 120 milligrams of caffeine how would I find out how much caffeine would be in a 16 ounce cup of coffee
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

amounts are proportional:
12+ounce+%3A120+milligrams=16+ounce+%3Ax++
12++%2Ax++=16++%2A120++
12x=16%2A120
+x=16%2A120%2F12
+x=16%2A10
x=160+ milligrams
or, you can do it this way:
if you know a 12 ounce cup of coffee has 120 milligrams, than you know that 1 ounce has 120+milligrams%2F12=10milligrams
consequently,a 16 ounce cup will have 16%2A10milligrams=160milligrams