Thursday, 18 May 2017

algebra precalculus - Define a variable and an equation for the situation - Why Division and not multiplocation equation?

Dwight wants to buy a camera that is on sale for 25% off. The original price of the camera is $300. What is the amount of the discount?
Define a variable, write an equation and solve algebraically.




The expected solution is a division equation



Why is a multiplication equation an incorrect solution ?
Let d = amount of discount;



d = 0.25 x 300



Would greatly appreciate your reply.

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