handsomeguy48 handsomeguy48

23-03-2021
Mathematics

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SYSTEM OF EQUATIONS

The sum of three times Sophia's age and twice Nick's age is 73. Twice Sophia's age plus four times Nick's age is 86. How old is Sophia?

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satashinakumoto satashinakumoto

23-03-2021

3s+2n=73
2s+4n=86

Multiply top equation by 2 and then subtract second equation

4s=60
Sophia is 15
Nick is 14

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