Question 1046487
Let channel 1 be x and 2 be y
:
x+y = 12.5 (1)
and
x = y+5.5 Substitute in (1):
y+5.5+y = 12.5
2y = 7
y = 3.5 is the time they spend watching channel 2
And channel 1?
3.5+5.5 = 9 hours is the time they spend watching channel 1