Answer:
3/12 and 5/x
12 times 5 is 60 so 3 times 20 shall be 60
3/12 = 5/20
:)
The first equation is

The second equation is

If you sum the two equations you'll cancel y:

And since the sum must be 11, we have y=9.
Answer:
Step-by-step explanation:
WHAT TOPIC IN MATH IS THIS?
Two !!!! ... unless this is some riddle and there's a huge in depth meaningful answer i'm unaware about o.O
The van is traveling about 55.9 miles per hour.