document.write( "Question 1204798: Hi
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document.write( "There were 2 classes A and B. 3/4 of the students in A and 5/8 in B passed a test. An equal number of students in both classes failed the test. If there was a total of 84 passes,what was the total number of students in both classes.
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Algebra.Com's Answer #841300 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "In class A, 3/4 passed, so the ratio of pass to fail was 3:1. \n" ); document.write( "In class B, 5/8 passed, so the ratio of pass to fail was 5:3, or 5/3:1. \n" ); document.write( "Let x be the number in each class who failed. \n" ); document.write( "Then the number who passed in class A was 3x, and the number who passed in class B was (5/3)x. \n" ); document.write( "The total number of passes was 84: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "The total number in class A was x+3x = 18+54 = 72. \n" ); document.write( "The total number in class B was x+(5/3)x = 18+30 = 48. \n" ); document.write( "ANSWER: The total number in the two classes was 72+48 = 120. \n" ); document.write( " \n" ); document.write( " |