SOLUTION: The age of Mrs. Cruz is 9 years more than three times her son's age. Find the age of each if fifteen years from now, she will be 6 years more than twice her son's age
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Question 1117187: The age of Mrs. Cruz is 9 years more than three times her son's age. Find the age of each if fifteen years from now, she will be 6 years more than twice her son's age Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! Let Mrs. Cruz's son's age be x and Mrs. Cruz's age by y
:
1) y = 3x +9
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substitute for y in equation 2 using equation 1
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2) y +15 = 2(x+15) +6
:
3x+9 +15 = 2x +30 +6
:
3x +24 = 2x +36
:
x = 12 and y = 45
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Mrs. Cruz's son is 12 and Mrs. Cruz is 45
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