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Bot To calculate the discount on a $79 cell phone with a 20% discount, you need to multiply the original price by the percentage discount.
20% of 79 is:
$$ 79 \times (20/100) = 15.80 $$
So the discount is $15.80.
To find the new price of the cell phone after the discount is applied, you need to subtract the discount from the original price:
$$ 79 - 15.80 = 63.20 $$
Therefore, the new price of the cell phone after a 20% discount is $63.20.