Shortcut: calculate the percentage that remains
Instead of finding the discount and subtracting it, calculate the part that remains after the discount. A 25% discount leaves 75% of the original 150.
- 1.Remaining percentage = 100% − 25% = 75%.
- 2.Convert 75% to 0.75.
- 3.150 × 0.75 = 112.5.