Awww... I just figured it out.
Another way...but probably not what the instructor intended... guess and check.
The ratio is 4/5. So think of equivalent fractions to 4/5, 8/10, 12/15. Keep going until you get to the pair that when you multiply them equals 980.
Or because it's a ratio
4L x 5L = 980
So 20L squared = 980
Lsquared = 49
L = 7
The lengths are 28 and 35.
Veronica
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Thread: UGH! 8th Grade Math
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02-12-2009, 04:04 PM #7
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Last edited by Veronica; 02-12-2009 at 04:14 PM. Reason: math error 4 times 7 = 28 :-)
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