A couch is 8 1/6 feet long. The material needed to make a slipcover is to be 2 1/3 times as long to allow for hems and tucking under. How long a piece of material is needed? I know the answer is 16 1/3 but I need help seeing how one gets that answer. Thanks
2007-08-05 06:26:47 · 3 answers · asked by Chris 2 in Science & Mathematics ➔ Mathematics
I'm not sure Michael, the question came off of a ACCUPLACER/CPT study guide from here http://www.forsythtech.edu/admission/pdfs/Print94088_CPTBook%206_9_04.pdf
2007-08-05 06:41:45 · update #1
Ok I misread the answer it was 19 1/18, sorry for the confusion
2007-08-05 08:53:35 · update #2
Your expected result is flawed unless the needed material lenght has been written wrongly.
8 1/6 feet is 98 inches.
Slipcover length if 2 1/3 times longer is 228.666 inches.
Your expected answer is 196 inches, which makes the slipcover exactly TWICE the length of the couch.
2007-08-05 06:38:53 · answer #1 · answered by Michael B 6 · 0⤊ 0⤋
If you have a couch 8 1/6 feet long and you need 2 1/3 times as long for material, the answer isn't 16 1/3. 8 1/6 = 49/6, 2 1/3 = 7/3. 49/6 x 7/3 = 343/18 = 19 1/18 feet. 16 1/3 would only be 2 times as much not 2 1/3. 49/6 x 2/1 = 98/6 = 16 2/6= 16 1/3
2007-08-05 13:41:37 · answer #2 · answered by chasrmck 6 · 0⤊ 0⤋
i think maybe it goes like this
2 x 8 = 16
2 x 1/6 = 2/6 which is = to 1/3
so answer is 16 1/3
I hope its been years since i did fractions :)
2007-08-05 13:42:49 · answer #3 · answered by debbie j 1 · 0⤊ 0⤋