Question 27 - Math Practice Test for the PSAT/NMSQT Exam

The price of one pair of jeans at a certain store is \(d\) dollars. Each additional pair of jeans purchased after the first is offered at a discount of \(20\%\).

If Ron purchased \(j\) pairs of jeans in all \((j>1)\), which of the following represents the total amount Ron would have paid?

\[1.80dj\]
\[0.20d(4+j)\]
\[0.20d(1+4j)\]
\[d(1+0.80j)\]

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