document.write( "Question 1158877: Maria is 10 years older than Zohar. The sum of their ages 23. Which equation would represent this scenario?
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Algebra.Com's Answer #781858 by math_helper(2461) $\"\"$ $\"About$

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document.write( "There are two equations, but they can be collapsed into one (and solved!):
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document.write( "M = Z + 10  
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document.write( "M + Z = 23\r
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document.write( "(Z+10)+Z = 23   <<< this equation represents the stated problem, with one unknown
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document.write( "2Z = 13         <<< simplified
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document.write( "Z = 13/2 = 6 1/2   <<< solved (it is very unusual for age problems to have fractional answers)\r
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document.write( "Since Zohar is 6 1/2, Maria must be 16 1/2.\r
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