Question

Use percents to find price of each set of items.(1) You purchase one pair of jeans, 2 hoodies and 3 t-shirts. what is the Total cost with no Sale? You purchase the same items but now you receive a 40% off coupon, How much is your total including the discount?

Answer 1

We can multiply the number of items by the price of each item to find the total cost:

`\begin{gathered} C=C_(jeans)+C_(hoodies)+C_(shirts)=1\cdot25+2\cdot30+3\cdot8 \\ C=25+60+24 \\ C=109 \end{gathered}`

The total cost is $109.

If we have a 40% discount, we have to substract it from the total cost.

The discount is equal to 40% of the total cost, so we can calculate the discount as:

`D=(40)/(100)\cdot C=0.4\cdot109=43.60`

Then, we will pay a total cost with discount of:

`C^(\prime)=C-D=109-43.60=65.40`

The total including the discount is $65.40.

NOTE: we could also have calculated it as 109*(1-0.4)=109*0.6=65.40.