document.write( "Question 787061: the ratio of the number of cards John had to the number of cards Peter had was 5:6.after Peter gave 1/3 of his cards to John,John had 42 cards.how many cards did John have at first? \n" ); document.write( "
Algebra.Com's Answer #478063 by xinxin(76)\"\" \"About 
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Suppose John had X cards at first, according to the statement,
\n" ); document.write( "42 = X + 6/5*1/3*X
\n" ); document.write( "Solve for X, get X = 30\r
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