document.write( "Question 866820: a mother is 15 years older than her daughter. The sum of the age of the daughter and the mother is 40. Wha is the age of the mother?
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Algebra.Com's Answer #522521 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "Let x represent daughter's age 
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document.write( "15 years older does not work, using 18 years older for the mother as an example
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document.write( " Mother  + Daughter = 40
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document.write( " ( x + 18) + x = 40
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document.write( "       2x = 22
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document.write( "        x = 11, the daughter's age, mother is 29
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