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After School Activities

 Kelley is a very active high school student. Every day after school, Monday through Friday, she participates in different activities : (basketball, dance, KungFu, guitar, and yoga). Each activity is taught or coached by a different adult : Beyonce, Derek, Samantha, Travis and Vivian. Kelley  has known her instructors for a different number of years (one through five). Hints : - The instructors' family names are :Baccarach, Costello, Gionta, Harrison and Williamson. - Gionta has known Kelley for five years. - Derek is either the first or the last instructor of the week. - Kelley has known Williamson one year less than Beyonce, and one year more than her yoga instructor, - Kelley has known Samantha one year longer than her basketball coach, and one year less than her guitar teacher. - Guitar and KungFu are both taught by men. - Kelley has her weekly guitar lesson the day before she sees Costello, and the day after she sees Gionta. - The instructor who has known Kelley for three years sees her each week the day before Mr. Harrrison and the day after the other male instructor. Question : Can you determine the day on which Kelley goes to each activity, the full name of each instructor  and the number of years she has known each of them. See answer

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