document.write( "Question 1152848: Natasha is 5 years older than Alex. Fiona is 10 years younger than Alex. If the total of their ages is 55, how old is the youngest of them? \n" ); document.write( "

Algebra.Com's Answer #774948 by math_helper(2461) $\"\"$ $\"About$

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document.write( "This is a good problem to work out mentally...\r
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document.write( "But since this is algebra.com, here is an algebraic method:
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document.write( "A = Alex's age\r
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document.write( "(A) + (A+5) + (A-10) = 55
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document.write( "3A - 5 = 55
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document.write( "3A = 60
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document.write( "A = 20   --->  A-10 = 10  (Fiona is 10)\r
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document.write( "Check:
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document.write( "Spelling out all the ages:
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document.write( "Alex is    20
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document.write( "Fiona is   10
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document.write( "Natasha is 25
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document.write( "--------------
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document.write( "Total is   55  (ok)\r
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