Question

Ivanna got a prepaid debit card with $15 on it. For her first purchase with the card, she bought some bulk ribbon at a craft store. The price of the ribbon was 21 cents per yard. If after that purchase there was $9.75 left on the card, how many yards of ribbon did Ivanna buy?

Answer 1

Answer:

Calculations:

Given,

• total amount = $15

,

• Remaining amount $9.75

1. Calculate total expeniture :

Total expenditure on purchasing = Tot amount - remaining amount

= 15 -9.75

=$ 5.25

2. Determine how many ribbons we bought :

• price per ribbon = 21 cents per yard

,

• Convert $5.25 intomcents = 5.25*100 = 525 cents

yards of ribbon that Ivanna bought is

`\begin{gathered} in\text{ 21 cents ; ribbon = 1 yard } \\ so,\text{ in 1 cent , ribbon = }(1)/(21)\text{yard} \\ this\text{ means that:} \\ ribbons=(1)/(21)\cdot\text{ 525} \\ \text{ =}25\text{ } \end{gathered}`

This means that Ivanna bought 25 ribbons per yard