Answer:

Step-by-step explanation:

Let, the number = n
It would be: 2n = 28
n = 28/2
n = 14
In short, Your Answer would be 14
Hope this helps!
It wants an average. So 30 MPH +12 MPH ÷ 2 which represents the 2 directions. Equal 21 MPH
You did not give the options for the statements but here's what I think is the answer.
8cm : 40m
1cm : 5m