What is the percent of 40 of 230

The perimeter of a rhombus with a side of 6 is 24

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!

The sum of two numbers is 86, and their difference is 20. find the two numbers