Amanda had some buttons. 20% of the buttons were red, there were 54more green buttons than red buttons. the remaining 90 buttons were yellow. what percentage of her buttons were green?

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

The longer leg of a 30-60-90 trangle is 18