Question

What is 20% off of $79.99?

Answer 1

63.992. Rounding it to the nearest hundreth, the answer is $63.99.

Explanation:

79.99 x (1 - 0.2) = 79.99 x 0.8 = 63.992

Answer 2

100% --- $79.99
1% --- $(79.99÷100) = $0.7999

20% off means 100% - 20% = 80%

80% --- $0.7999×80 = $63.992

Leave it to the nearest cent: $63.99 ---- Answer!

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