Bunuel wrote:
A certain state has a sales tax of 5 percent on the portion of a purchase price that is greater than $100. If a customer paid a sales tax of $4 on a particular item, what was the purchase price of the item?
(A) $120
(B) $124
(C) $180
(D) $184
(E) $220
Let the price of item that is greater than\($100\) be\(x\).
\(5\) % sales tax on portion greater than\($100 = 5\) % of\(x\).
\(4 = \frac{5}{100} x\)
\(x = \frac{4*100}{5} = 80\)
Therefore purchase price of item\(= 100 + 80 = $180\) . Answer (C)...
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