Answer:

Step-by-step explanation:

Answer:
Step-by-step explanation:
The answer is 110 minutes. Just did this on Khan Academy :)
Answer:
b)Add the equations to eliminate x.
Step-by-step explanation:
y= x+20
y= - x+2
Result of the addition: (-x cancels x)
2y = 22
y =11
11=x +20 -9 = x
11=9+2
11 = -9 +20
Answer:
In 6/ 12 hours they will be the same.