Sam created a video that was originally 77 minutes long, but he ended up cutting it

by 20%. How long was his video after he cut it?

Answer: 61.6 minutes

Step-by-step explanation: First you have to turn 20% into a decimal. 20% as a decimal is 0.2. Then, you have to multiply 77 and 0.2 which gives you 15.4. Lastly, you subtract 15.4 from 77. This gives you your answer-61.6 minutes.

Multiply 77*20%

77*20% = 15.4

Substract 15.4 from 77

77-15.4 = 61.6

His video was 61.6 minutes after he cut it.