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Marathon Race

Marathon Race. By: Eric Hong. Bob and Joe are running a race. What additional info do you need?. What info do you still need?. Bob is 300m/hour faster than Joe is. However, he gets tired 300 minutes later, and jogs 600m/hour slower than Joe for the rest of this race. .

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Marathon Race

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  1. Marathon Race By: Eric Hong

  2. Bob and Joe are running a race. What additional info do you need?

  3. What info do you still need?

  4. Bob is 300m/hour faster than Joe is. However, he gets tired 300 minutes later, and jogs 600m/hour slower than Joe for the rest of this race. Joe runs 3.7 kilometers/hour

  5. Solution Joe 42.84955592km/3.7km=11.58096106 hours 11 hours 58.96106/5*3 minutes= 35.376636 minutes 11 hours 35.376636 minutes Bob 4 km*5hr= 20km (42.84955592km-20km)/3.1km=22.84955592km left/3.1km= 5 hr+7.370825548=12.37082555 hrs. 12 hours 37.082555*3/5= 22.249533 minutes Bob’s Time-Joe’s Time= 12 hours 22.249533 minutes - 11 hours 35.376636 minutes 47.3918694 minutes, the time Joe beats Bob. Distance of race Diameter=12km, so 12+6+6+semi-circle=distance of race Semicircle=18.84955592km 12km+6km+6km+18.84955592km= 42.84955592km

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