Question

Samantha, Danielle, Jeff, and Isaac share minutes on their cell phone plan. Samantha used 1/4 of the minutes, Danielle used 0.5 of the minutes, and jeff used 0.2 of the minutes. what percent of the cell phone plan minutes are left for Issac to use? please help asap

Answer 1

1/20 because Samantha gets a 1/4 of the minutes or .25 so you add .25 + .5 + .2 and you are left with .05