Question

The graph shows distances traveled by two bikers.

Which biker travels at a greater rate and what is that rate?



A.
Biker 1
8 mi/h

B.
Biker 2
10 mi/h

C.
Biker 1
10 mi/h

D.
Biker 2
8 mi/h

http://static.k12.com/calms_media/media/1418000_1418500/1418063/1/fd126f963dd92bd9a0a14fadc845aa23b7024e31/FGA_130919_161152.jpg

Answer 1

To reach reach the 55 mile point, biker 2 takes less time(less than 6 hours when the first one takes 7 hours). The answers are down to B and D. If it were D, then after 6 hours, he would've made 6*8 = 48 miles which is under 55 miles, so it's not right.
Therefore it's B. 10 mi/h
Making an approximate guess like this avoids tracing pixels on the graph.