Question
Sam left his school at 3:05 p.m. He walked a speed of 3.2 mph. 15 minutes later, Oliver started running after Sam and caught up with him 10 minutes later. What was Oliver's speed?
Answers
GPT 3.5
Let's first calculate the distance Sam walked before Oliver caught up with him.
Sam walked for 15 minutes at a speed of 3.2 mph:
Distance = Speed * Time
Distance = 3.2 mph * (15/60) hours
Distance = 3.2 mph * 0.25 hours
Distance = 0.8 miles
Now, let's find out how long Oliver took to catch up with Sam.
Oliver started running 15 minutes after Sam, which is (15+10) = 25 minutes after Sam left the school.
This is equal to 25/60 = 0.4167 hours.
When Oliver caught up with Sam, he covered the same distance of 0.8 miles.
Let's denote Oliver's speed as X mph.
Oliver's speed = Distance / Time
X = 0.8 miles / 0.4167 hours
X ≈ 1.92 mph
Therefore, Oliver's speed was approximately 1.92 mph.
Sam walked for 15 minutes at a speed of 3.2 mph:
Distance = Speed * Time
Distance = 3.2 mph * (15/60) hours
Distance = 3.2 mph * 0.25 hours
Distance = 0.8 miles
Now, let's find out how long Oliver took to catch up with Sam.
Oliver started running 15 minutes after Sam, which is (15+10) = 25 minutes after Sam left the school.
This is equal to 25/60 = 0.4167 hours.
When Oliver caught up with Sam, he covered the same distance of 0.8 miles.
Let's denote Oliver's speed as X mph.
Oliver's speed = Distance / Time
X = 0.8 miles / 0.4167 hours
X ≈ 1.92 mph
Therefore, Oliver's speed was approximately 1.92 mph.