For an average size lawn, Lee takes 1 hour to mow and 2 hours to trim and sweep. For a large size lawn, Lee takes 3 hours to mow and 3 hours to trim and sweep. One week Lee mowed, trimmed, and swept 5 average size lawns and 3 large size lawns. How many hours did Lee spend working on all the lawns? A. 72
B. 40
C. 33
D. 17

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?