SOLUTION: Ricardo is 4 years less than twice as old as his sister. The sum of their ages is 20. How old is Ricardo?

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Question 59721This question is from textbook
: Ricardo is 4 years less than twice as old as his sister. The sum of their ages is 20. How old is Ricardo? This question is from textbook

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Ricardo is 4 years than twice as old as his sister. The sum of their ages is 20. How old is Ricardo?
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Let his sister's age be "x".
Ricardo's age is"2x-4"
EQUATION:
x+2x-4=20
3x=24
x=8 (sister's age)
2x-4=12 (Ricardo's age)
Cheers,
Stan H.