Question

The 12 students in Mateo's computer programming class are using the computer lab. Some computers are shared by pairs of students, and 6 students work alone. Which equation could you use to determine how many computers are shared in the computer lab? Let c be the number of shared computers.
A c/2 + 6 = 12
B 2c – 6 = 12
C c/2 – 6 = 12
D 2c + 6 = 12

Answer 1

c = # of shared computers
total: 12 students

6 students work alone so 6 students work in pairs.

2(3) + 6 = 12

D) is the answer.