SOLUTION:
Step 1:
In this question, we are given the following:
A7 in, medium -angle grinder is on sale for $79.80 and is marked as being 40% off. What was the original list price?
Step 2:
The details of the solution are as follows:
40% off means that, we are working with 60 % of the original price, then we have that:
[tex]\begin{gathered} From\text{ the question, we can see that:} \\ \text{ \$ 79.80 --- 60\%} \\ x\text{ -------100\%} \\ cross-multiply,we\text{ have that:} \\ 60x\text{ = 79.80 x 100} \\ 60x\text{ = 7980} \\ Divide\text{ both sides by 40, we have that:} \\ x\text{ = }\frac{7980}{60} \\ \text{x = \$ 133} \end{gathered}[/tex]CONCLUSION:
The original list price = $ 133