At the county fair, Peter wants to ride a rollercoaster that costs 28. tickets, a bumper car that costs 19 tickets, and a merry-go-round that costs 25 tickets. Peter had 32 tickets, but lost 9 of them on a ride. How many more tickets does he need?​

Solve the problem by using a venn diagram a group of students were surveyed about their taste in music. they were asked how they like three types of music: rock, country western and jazz. the results are summarized below: no one dislikes all three types of music. six like all three types of music. eleven don’t like country western. sixteen like jazz. three like country western and jazz, but not rock. six don’t like rock. eight like rock and country western. seven don’t like jazz. how many students were surveyed?