The table below shows the distribution of eye color and hair color for the 60 students in a chorus.

a. how many students in the chorus have hair? show or explain how you got your answer.
b. what fraction of the students with blond hair have hazel eyes? show or explain how you got your answer.
c. what percentage of all the students have both green eyes and red hair. show or explain how you got your answer.
d. what percentage of all the students have green eyes or red hair? show or explain you got your answer