I looked it up, and it said false.
Subtract 8/10 from 4/10 but just the numerator (the top number) and you will get 4/10
The calculations for 2, 4, 8 year can be derived as follows,
For simple interest:
S.I = 
P= principle
T= Time
R= Rate
For 2 year;
S.I =
= $224
Amount = $2224
For 4 year;
S.I =
= $448
Amount = $2448
For 8 year;
S.I =
= $896
Amount = $2896
270 miles be 90+90+90 equals 270 and thats the answer
A triangle, it might be an obtuse