agray062103
24.07.2019 •
Mathematics
Kelly has a ribbon that is 60 inches long she cuts 40% of the ribbon for an art project while working on the project she decides she only needs 75% of the piece she cut off how many inches of ribbon does kelly end up using for her project
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Ответ:
100 % = 60
1% = 60 / 100
= 0.6 inch
40 % = 0.6 x 40
= 24 inches
Ribbon used = 75 % x 24
= 18 inches
Hope this helps :))
~Top
Ответ:
Original ratio: 3 + 8 = 11
240/11 = 21.818
3 x 21.818 = 65.5
11 x 21.818 = 174.5
New ratio: 3 + 2 = 5
240/5 = 48
3 x 48 = 144
2 x 48 = 96
Number of stamps bought = new amount - original amount:
144-65.5 = 78.5
Round to nearest whole number = 79 stamps bought