mary and cindy can do a typing test in 2 hours. mary can do it in 3 hours less than cindy. how many hours can cindy do it in?
1 answer:
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1. 3y
multiplying 3 and y together gets 3y
2. y-5
5 less implies that we subtract 5 from y
3. y+7
adding 7 to y, self-explanatory
4. 9y
same thing as #1
5.
quotient of implies division, since number y is listed first, y is the numerator