Sue's sushi placed two orders with its fish supplier. one order was for 15 pounds of salmon and 8 pounds of tuna; the order totaled $259. the other order was for 12 pounds of salmon and 6 pounds of tuna; this order totaled $204. what is the cost for one pound of salmon and one pound of tuna?

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?