document.write( "Question 173402: please help me solve this problem step by step. Joey is thrice as old as his son. The sum of their ages is 60. How old is each of them?. thank you. \n" ); document.write( "

Algebra.Com's Answer #128272 by Mathtut(3670) $\"\"$ $\"About$

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thrice is three. lets call Joey's age j and his sons's age s
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\n" ); document.write( "Joey(j)is(=)thrice(3 times)as old as son(s)--->j=3s
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\n" ); document.write( "sum of Joey(j)+son(s)=60---->j+s=60
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\n" ); document.write( "j=3(s)....eq 1
\n" ); document.write( "j+s=60....eq 2
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\n" ); document.write( "take j's value from eq 1 and plug it into eq 2
\n" ); document.write( ":(3s)+s=60
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\n" ); document.write( "4s=60.....combining terms
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\n" ); document.write( " $\"highlight%28s=15%29\"$ sons age.....(divided both sides by 4 to isolate s
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\n" ); document.write( " $\"highlight%28j=3s=3%2815%29=45%29\"$ joey's age
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