Mr. Smitherly leaves Cedar Rapids at 8:00 a.m. and drives north on the highway at an average speed of 50 km per hour. Mr. Dinkle leaves Cedar Rapids at 8:30 a.m. and drives north on the same highway at an average speed of 75 km per hour. Mr. Dinkle will	Choose the correct choice from the following:
A) overtake Mr. Smitherly at 9:30 a.m.
B) overtake Mr. Smitherly at 10:30 a.m.
C) overtake Mr. Smitherly at 11:00 a.m.
D) be 30 miles behind at 8:35 a.m.
E) never overtake Mr. Smitherly
After thirty minutes, Mr. Smitherly is ahead by 25 km.   Mr. Dinkle gains on Mr. Smitherly 25 km each hour.   1 hour after 8:30 a.m., Mr. Dinkle will catch Mr. Smitherly.   The answer is overtake Mr. Smitherly at 9:30 a.m..
<result>A</result>
Mr. Smitherly leaves Cedar Rapids at 8:00 a.m. and drives north on the highway at an average speed of 50 km per hour. Mr. Dinkle leaves Cedar Rapids at 8:30 a.m. and drives north on the same highway at an average speed of 75 km per hour. Mr. Dinkle will