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Mathematics
24.02.2021 01:45
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Mrs. wing spent 2 3/4 hours replacing zippers. if it takes her 1/4 hour to do one,

Mrs. wing spent 2 3/4 hours replacing zippers. if it takes her 1/4 hour to do one, how many zippers did she replace?
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dbag1162
dbag1162
4,6(35 marks)
He replaced 11 zippers, the 2 can be thought of as 2 sets of four quarters or 8/4
and we have 3/4 

8/4 + 3/4 = 11/4. if it takes 1/4 hours to replace a zipper, then he replaced 11 zippers
michaelowenmccollum
michaelowenmccollum
5,0(28 marks)
\frac{\frac{5}{31}}{\frac{15}{23}}=\\\\\frac{5}{31}\times\frac{23}{15}=\\\\ \frac{5\times23}{31\times15}=\\\\\frac{115}{465}=\\\\ \frac{23}{93}\\\\{\boxed{\frac{23}{93}}

ANSWER: C

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