Question

Ang finds a great sale on a new pair of headphones. The original cost was $89 but the item is

25% off. How can Ang calculate his total bill in one step?

Answer 1

Answer: 89(1 - 0.25) = $66.75

Explanation:

convert 25% to decimal = 0.25

1 - 0.25 = 0.75

1 equals the full amount, by subtracting 0.25, you are taking away 25% and you are then left with 75% of the original (0.75)

By multiply 0.75 by 89, it is implying that you want to know how much is left after subtracting 25 % off of the original price and you are then left with 66.75

Ang can use the equation 89(0.75) to find his total bill which is $66.75