There were 90 boys at the Hammarskjold school dance. They made up 60% of all of the students there. How many total students were there?

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?