Jaya agreed to give matt a loan for $80 but she'll also be charging him 8% interest. How much will he have to pay her back

Step-by-step explanation:

Let organise our information:

Jaya will charge Matt an 8 percent interest for 80 dollars loan

we can say that:

80 dollars⇒ 100 percent

x ⇒ 8 percent

so:

x = (8*80) / 100

= 6.4

so the interest is 6.4 dollars

so the total cost is 86.4

Answer $86.40

Explanation:

Part. %

-- - - --

Whole. 100