document.write( "Question 1176617: In a class, the ratio of right-handed to left-handed students is 7:2. The total number of students is 36. If none of the students is ambidextrous, what is the number of left-handed students in the class? \n" ); document.write( "
Algebra.Com's Answer #803783 by math_tutor2020(3817)\"\" \"About 
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\n" ); document.write( "The ratio of right-handed to left-handed is 7:2
\n" ); document.write( "This could mean we have 7 right-handed people and 2 left-handed people. This gives 7+2 = 9 total students in the class.\r
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\n" ); document.write( "\n" ); document.write( "However, we're told that we actually have 36 total students. The jump from 9 to 36 is \"times 4\", since 36/9 = 4.\r
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\n" ); document.write( "\n" ); document.write( "So we must multiply every value of 7:2 by 4 to get
\n" ); document.write( "7*4 = 28
\n" ); document.write( "2*4 = 8\r
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\n" ); document.write( "\n" ); document.write( "Then note how 28+8 = 36 and how the ratio 28:8 reduces to 7:2 when you divide both parts by 4. Put another way, 7:2 turns into 28:8 when you multiply both parts by 4.\r
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\n" ); document.write( "\n" ); document.write( "The ratio 28:8 means we have 28 right-handed people and 8 left-handed people.\r
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\n" ); document.write( "\n" ); document.write( "Answer: 8
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