Answer:
$190
Step-by-step explanation:
With a 20% discount, John pays 80% of the computer price. (since 100% -20%= 80%)
Let $C be the original price of the computer.
80%C= 760
[tex] \frac{80}{100} C = 760 \\ C = 760 \div \frac{80}{100} \\ C = 760 \times \frac{100}{80} \\ C = 950[/tex]
Discount
= 20% C
[tex] = \frac{20}{100} (950) \\ = 190[/tex]
Thus, the discount was $190.
