Answered

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The camera Melissa wanted for her birthday is on sale at 21% off the usual price. The amount of the discount is $79.80. What was the original price of the camera?

Sagot :

MattD
In this task, we use the ratio. If amount of the discount is $ 79.80, the original price is much higher than the discount. Therefore, arrange the appropriate ratio as below and multiply on the cross:

y --> price (original)
x --> amount of discount

0,21x ----- 79,80$
x       ----- y

0,21xy = 79,80x |:x
0,21y=79,80 |:0,21
y=380

The oryginal price is 380$
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