If 1/2+2/3+3/y=23/12; then y=?
A
2
B
3
C
4
D
9
Correct Answer: 4
Hints: 1/2 + 3/2 + 3/y = 23/12 (3 + 4)/6 + 3/y = 23/12 3/y = 23/12 - 7/6 3/y = (23 - 14)/12 3/y = 9/12 y = 4