$48$

$49$

$50$

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Question $21$

A company purchased $$8,400$ of merchandise on june $15$ with terms of $\frac{3}{10},\frac{n}{45},$ on June $20,$ it returned $$420$ of that merchandisf. On June $24,$ it

$57\mathrm{.}741.$

$$8,148.$

$$8,400.$

$$57,980.$

$$7\mathrm{.}783.$