Final answer:
To find the original price of the slacks given a reduced price of $36 at 90% of the original price, you can set up an equation and solve for the original price.
Step-by-step explanation:
To find the original price of the slacks, we need to calculate 100% of the price using the given information that the reduced price is 90% of the original price. Let's represent the original price as x. We can set up the equation:
90% of x = $36
Converting 90% to decimal form, we get:
0.90x = $36
To solve for x, we divide both sides of the equation by 0.90:
x = $40
Therefore, the original price of the slacks was $40.