Percentages, SM-Bank 016 MC

The table below lists the original price and the amount of discount of a pair of jeans at four different shops.

JEANS SALE
Shop	Original price	Discount
A.	\($20\)	\(25\%\)
B.	\($21\)	\(\dfrac{1}{3}\)
C.	\($18\)	\(20\%\)
D.	\($17\)	\($2\text{ off}\)

Which shop has the lowest sale price for the jeans?

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\(B\)

Show Worked Solution

\(\text{Consider the sale price at each shop:}\)

\(\text{A}\)	\(= 20-(25\%\times 20) = $15\)
\(\text{B}\)	\(= 21-(1/3\times 21) = $14\)
\(\text{C}\)	\(= 18-(20 \text{%}\times 18) = $14.40\)
\(\text{D}\)	\(= 17-2 = $15\)

\(\Rightarrow B\)