Answer: The original price of the lawn mower was $649
Explanation:
If Joaquin bought the lawn mower for $519.20 after a 20% discount, it means that he paid only 80% of the original price. We can use this information to calculate the original price of the mower by setting up the following equation:
0.8x = 519.20
where x is the original price of the lawn mower. To solve for x, we can divide both sides of the equation by 0.8:
x = 519.20 / 0.8
x = $649