20 is the answer to the question you asked.
17.775 is the most precise since it has the most decimals. However, it may not be correct.
Answer:
A = 2, B = 1, C = 5, D = 3, E = 4
Step-by-step explanation:
Variety of workings including
Opposite angles are equal
90 degrees on a right angle
180 degrees in a straight line
If he runs 1/2 a mile in 5 minutes then 60 minutes would be 5x12 and 1/2x12 would be 6 so he can run 6 miles per hour