SOLUTION: Ronnie purchased a lawn mower. The cost of the mower, including an 8% sales tax, was $648. Find the cost of the mower before tax.

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Question 1112763: Ronnie purchased a lawn mower. The cost of the mower, including an 8% sales tax, was $648. Find the cost of the mower before tax.
Found 2 solutions by ikleyn, josmiceli:
Answer by ikleyn(52867) About Me  (Show Source):
You can put this solution on YOUR website!
.
Equation is


x*(1 + 0.08) = 648   dollars,    or, which is the same


1.08*x = 648,   


where  x = the cost of the mower before tax.


The solution is  x = 648%2F1.08, and you can calculate it on your own.


Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +c+ = the cost of the mower before tax
+c+%2B+.08c+=+648+
+1.08c+=+648+
+c+=+648%2F1.08+
+c+=+600+
The cost before tax was $600
--------------------------------
check:
+.08c+=+48+
+c+=+48%2F.08+
+c+=+600+
OK