Question

the music for Alyssa's dance routine last exactly 4 min. when she dances her routine, she starts with her music and finishes 12 seconds before the music ends. what percent of the time the music is playing is Alyssa dancing.

Answer 1

If her music lasts 4 minutes, her music is 60*4=240 seconds since there are 60 seconds in a minute. Next, since her dance is 12 seconds less than the music, her dance is 240-12=228 seconds long. To finish this up, we have 228/240. I challenge you to figure out the percentage on your own!

As an example, we have 123/463, which is around 0.266. Multiplying that by 100, we end up with around 26.6 percent as the percent 123 is of 463