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Question: The price of a share at the beginning of trading was $633. At the close of trading, the price of the same share was $493. By how much did the price go down at the end of the day?


A ) $115
B ) $140
C ) $190
D ) $215

Steps to derive

1 Let p be the amount the price of the share decreased.

 [Wrie an algebraic equation.]
2 633 - p = 493

 [Subtract 633 from each side.]
3 633 - p - 633 = 493 - 633

 [Simplify.]
4 p = 140

5 The price of the share went down by $140 during the day.



Hence the right answer is Option B

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