SOLUTION: You have 2 cups of sunflowers and 3 cups of Raisins total calories are 2900 Find the # of calories per cup of Raisins if it is 400 calories less than number od calories per cup o

Algebra ->  Average -> SOLUTION: You have 2 cups of sunflowers and 3 cups of Raisins total calories are 2900 Find the # of calories per cup of Raisins if it is 400 calories less than number od calories per cup o      Log On


   

Question 214846: You have 2 cups of sunflowers and 3 cups of Raisins total calories are 2900
Find the # of calories per cup of Raisins if it is 400 calories less than number od calories per cup of sunflowers
Answer by elima4(15) About Me  (Show Source):
You can put this solution on YOUR website!
2s = sunflowers
3r = raisins
2s + 3r = 2900
r = s-400
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now replace what r = with r in the other equation;
2s + 3(s-400) = 2900
2s + 3s - 1200 = 2900
Collect like terms and add 1200 to both sides;
5s = 4100
divide by 5;
s = 820
Now we have s, lets find r;
2(820) + 3r = 2900
1640 + 3r = 2900
3r = 1260
r = 420
:)