Question

Kala got a prepaid debit card with $25 on it. For her first purchase with the card, she bought some bulk ribbon at a craft store. The price of the ribbon was 12 cents per yard. If after that purchase there was $21.28 left on the card, how many yards of ribbon did Kala buy?​

Answer 1

31 yards of ribbon

Explanation:

Of after purchasing the ribbon in bulk she has $21.28 left from her initial $25 it would mean that she spent $3.72 in total.

`25 - 21.28 = 3.72`

So in spending $3.72 on ribbons we can find how much yards she bought by seeing how many times 12 cents can go into the $3.72 (the amount of money she spent).

`0.12 √(3.72) = 31`