assign 2

let c = have computers, j = have java programming books, b = have both, t = total of students
c + 87 = 221
c = 221 - 87
= 134

j + 87 = 159
j = 159 - 87
= 72

c + j + 87 = t
t = 134 + 72 + 87
= 293

a. (87/293)*100 = 29.7%


b. (134/293) * 100 = 45.7%

c. (72/293)*100 = 24.6%

d. (87/293)*100 = 29.7%