Question

Emily's credit card has arrived and she has a balance of $2,350. She only has enough money to pay off $1,500. She knows that she will have to pay 8% interest on whatever she doesn't pay off. Which proportion should she use to determine how much interest she will have to pay?

Answer 1

Here is how you would solve that problem


`((2350-1500)*8)/(100)`

Answer 2

`850* (8)/(100)`.

Explanation:

We are given that,

Balance in Emily's card = $2,350

Amount paid by Emily = $1,500

So, amount does not paid by her = 2350 - 1500 = $850.

Also, the interest on the amount not paid = 8% =
`(8)/(100)`

Thus, the proportion representing the interest she has to pay is given by,

Proportion = Amount she does not pay off × Interest paid.

i.e. Proportion =
`850* (8)/(100)`.

Hence, the required proportion is
`850* (8)/(100)`.