SOLUTION: Kara's brothers Carl and Juan, are 4 years apart. Carl is the older of the two. Thier ages add up to 18. How old is each boy?

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Question 653509: Kara's brothers Carl and Juan, are 4 years apart. Carl is the older of the two. Thier ages add up to 18. How old is each boy?
Answer by schmidtmomto6(24) About Me  (Show Source):
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Let's call Juan's age "J". Carl is 4 years older, so his age will be called "J+4." Their ages add up to 18, so J + (J+4) = 18. So, 2J+4=18, 2J=14, J=7. This means Juan is 7, so Carl is 7+4, or 11. Check by making sure those ages add up to 18, as stated in the problem.