document.write( "Question 1062268: the sum of my parents' ages is 70. Twenty years ago, my father was 4 years older than my mother. how old are they now \n" ); document.write( "

Algebra.Com's Answer #677131 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "the sum of my parents' ages is 70. Twenty years ago, my father was 4 years older than my mother. how old are they now
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Let father's age be F
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document.write( "Then mother's age = 70 - F
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document.write( "Father was 4 years older than mother, 20, 10, 5, 2, 15 years ago. The point is, while alive, the father will always be 4 years older than the mother. 
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document.write( "Hence, we get mother's age as: F - 4
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document.write( "We then have: 70 - F = F - 4
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document.write( "- F - F = - 4 - 70
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document.write( "- 2F = - 74
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document.write( "F, or father's age is: 
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document.write( "Mother's is: 70 - 37, or 37 - 4 =  \n" );
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