What is the rest of the problem? I would answer this if you had more info on it. :D
There is not a real way to justify this, but I saw first that 400-80 equals 320 which is double 160. This made me think that the period of time during this was 2 hours. The car drove 80 miles in two hours and the plane flew 400 miles in 2 hours. The period for one hour would be 40 mph for the car and 200 mph for the plane. 200-40=160. I have no idea how to prove it though and I’m hoping you can go backwards.
Answer:
42
Step-by-step explanation:
For the step, let's get an answer about how long it would take for Tina to run around the base in 10 minutes.
For this, you would just need to do: 12 ÷ 2 = 6
So, 6 runs = 10 minutes
Since 70 ÷ 10 = 7 ...
All we will have to do is 7 x 6 which would equal 42.
Therefore, Tina can run 42 circles around the base in 70 minutes.
<em>-kiniwih426</em>
