A store offers a 4% discount if a consumer pays cash rather than paying by credit card.

If the cash price of an item is $84.00, what is

the credit-card purchase price of the same

item?

The credit card purchase price of the same item is $87.5

Step-by-step explanation:

Here, we are interested in calculating the credit-card purchase price of an item if we are given the cash price

Since there is a 4% discount on the cash; the percentage paid will be 100-4% = 96%

So what we are saying is that, it is 96% of the credit cash purchase that was paid as cash;

Let the credit card purchase be $x

96% of x = 84

96/100 * x = 84

96x = 100 * 84

x = 8400/96

x = 87.5

Thus, the credit card purchase price of the same item is $87.5

yes. we do proportions in probabilities.