SOLUTION: Marc is 8 years younger than his brother Richard. The sum of their ages is 22 years. What equation could be used to find Marc's age? What is Marc's age?

Question 733869: Marc is 8 years younger than his brother Richard. The sum of their ages is 22 years. What equation could be used to find Marc's age? What is Marc's age?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Marc is 8 years younger than his brother Richard. The sum of their ages is 22 years. What equation could be used to find Marc's age? What is Marc's age?
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Equations:
m = r - 8
m + r = 22
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Rearrange:
m-r = 8
M+r = 22
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Add and solve for "m":
2m = 30
Marc's age is 15 yrs.
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M+r = 22
r = 7 yrs
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Cheers,
Stan H.
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