Steve stayed after school for extra activities 55% of the 180 school days this year. How many days did Steve stay after school?

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?

If i have one apple and give you the apple, how many apples do i have?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?