SOLUTION: If the ratio of blue marbles to red marbles is 2:5 and there are 28 marbles altogether,how many marbles are blue,how many are red

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Question 1024200: If the ratio of blue marbles to red marbles is 2:5 and there are 28 marbles altogether,how many marbles are blue,how many are red
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
R%2FB=2%2F5
5R=2B
and
R%2BB=28
2R%2B2B=56
Substituting,
2R%2B5R=28
7R=28
Solve for R and then use either equation to solve for B.