The principal at Richmond High School is planning the graduation ceremony for this year. Last year, it
took her 50 minutes to hand out diplomas to 250
graduates. This year, there are 300 graduates.
If the principal hands out diplomas at the same
rate, how long will it take to hand out diplomas at
this year's ceremony?

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.