document.write( "Question 1203623: jack is 7 years older than mia. the sum of there ages is 53.how old is jack.
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Algebra.Com's Answer #853482 by ikleyn(53618)\"\" \"About 
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\n" ); document.write( "Jack is 7 years older than Mia. The sum of \"highlight%28cross%28there%29%29\" their ages is 53. How old is Jack.
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\n" ); document.write( "\n" ); document.write( "Again, it is nice problem to solve it MENTALLY in 6 seconds, without using equations.\r
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\n" ); document.write( "\n" ); document.write( "Indeed, consider/imagine another person Jack' instead of Jack, who (Jack') is 7 years younger than Jack.\r
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\n" ); document.write( "\n" ); document.write( "Then Jack' and Mia both are of the same age, and the sum of their ages is 53-7 = 46.\r
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\n" ); document.write( "\n" ); document.write( "Hence, Jack' is 46/2 = 23 years old.\r
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\n" ); document.write( "\n" ); document.write( "It implies that Jack, the true person, is 23 + 7 = 30 years old.\r
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\n" ); document.write( "\n" ); document.write( "At this point, the solution is complete.\r
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