Question 741050: Jaime and his dad have decided to have a race. Jaime runs at a speed of 10 feet per second and his dad runs at 15 feet per second. At the beginning of the race Jaime's dad decides to give him a 30 second head start. How long will it take Jaime's dad to catch up with him?
Answer by jam123(18)   (Show Source):
You can put this solution on YOUR website! If Jaime gets a 30 sec head start, he would've ran 300 feet already. Now in another 30 secs time, Jaime would've ran 600 feet while his dad at 450. It's getting pretty close! In another minute, Jaime = 1200 ft. while his dad = 1350 ft. Oops, too much! There's a difference of 150 ft., while there is a difference of 5 ft./s in Jaime and his dad's speeds. 150 divided by 5 = 30. Let's go 30 secs back in time. Jaime = 900 ft. while his dad = 900 ft. Hey -- they're both at 900 ft.! Also, 1 min and 30 sec has passed.
The answer is 1 and a half min.
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