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 9:00 a.m. and drives north on the same highway at an average speed of 75 km per hour. Mr. Dinkle will Choices.
A) overtake Mr. Smitherly at 9:30 am
B) overtake Mr. Smitherly at 10:30 am
C) overtake Mr. Smitherly at 11:00 am
D) be 30 miles behind at 9:35 am
E) never overtake Mr. Smitherly
After one hour, Mr. Smitherly is ahead by 50 km.   Mr. Dinkle gains on Mr. Smitherly 25 km each hour.   2 hours after 9:00 a.m., Mr. Dinkle will catch Mr. Smitherly.   The answer is overtake Mr. Smitherly at 11:00 am.
<result>C</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 9:00 a.m. and drives north on the same highway at an average speed of 75 km per hour. Mr. Dinkle will