For every 3 packages that Marcella wraps, she uses 1/2 of a roll of wrapping paper. If she uses 2 1/2 rolls of wrapping paper, ho

Question

For every 3 packages that Marcella wraps, she uses 1/2 of a roll of wrapping paper.

If she uses 2 1/2 rolls of wrapping paper, how many packages has she wrapped?
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Thiên Thanh 4 years 2021-07-31T18:23:13+00:00 1 Answers 103 views 0

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  1. kimcuc
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    2021-07-31T18:25:02+00:00
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    Answer:

    She has wrapped 15 packages.

    Step-by-step explanation:

    Heres how I did it. I used my fingers for this, it’s a little odd I know but it works. I put up one finger for each half. So each finger represents one half. I needed to get to 2 1/2 so I put up two finger and I said “that’s one ” because a half plus a half is a whole or just one. Then I put up one more finger and I said ” That’s one and a half”. I then put up two more and then I had 2 1/5. What I did then was count how many fingers I had up. I had 5 fingers up. So then I multiplied 3 x 5 and that gave me 15. Hope I could help!

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )