You are at the store and you see that a jacket is 15% off. The jacket normally costs $77. Estimate how much you will save if you buy the jacket.

To estimate how much you will save, you can calculate 15% of $77.

15% of $77 = 0.15 x $77 = $11.55

Therefore, you will save approximately $11.55 when you buy the jacket at 15% off.