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April 1, 2015

April 1, 2015

Posted by **carmen** on Sunday, April 1, 2007 at 5:32pm.

exercise. An important fact to consider is that a person

needs to burn off 3,500 calories more than he or she takes

in to lose 1 pound, according to the American Dietetic

Association.

The following table shows the number of calories burned per hour (cal/h) for a variety

of activities, where the figures are based on a 150-pound person.

Chart:

Activity Cal/h

Bicycling 6 mi/h 240

Bicycling 12 mi/h 410

Cross-country skiing 700

Jogging 5 1/2 mi/h 740

Jogging 7 mi/h 920

Jumping rope 750

Running in place 650

Running 10 mi/h 1280

Swimming 25 yd/min 275

Swimming 50 yd/min 500

Tennis (single) 400

Walking 2 mi/h 240

Walking 3 mi/h 320

Walking 4 1/2 mi/h 440

Work with your group members to solve the following problems. You may find that

setting up proportions is helpful.

For problems 1 through 4, assume a 150-pound person.

1. If a person jogs at a rate of 5 1/2 mi/h for 31/2 h in a week, how many calories do they

burn?

2. If a person runs in place for 15 minutes, how many calories will be burned?

3. Ifapersoncross-countryskis for35minutes,howmanycalories willbeburned?

4. How many hours would a person have to jump rope in order to lose 1 pound? (Assume

calorie consumption is just enough to maintain weight, with no activity.)

Heavier people burn more calories (for the same activity), and lighter people burn

fewer. In fact, you can calculate similar figures for burning calories by setting up the

appropriate proportion.

5. At what rate would a 120-pound person burn calories while bicycling at 12 mi/h?

6. At what rate would a 180-pound person burn calories while bicycling at 12 mi/h?

7. How many hours of jogging at 5 1/2 mi/h would be needed for a 200-pound person to

lose 5 pounds? (Again, assume calorie consumption is just enough to maintain weight,

with no activity.)

- math -
**Sophia**, Thursday, July 22, 2010 at 9:27pmHow many hours of jogging at 5 1/2 mi/h would be needed for a 200-lb person to lose 5 pounds? (Assume calorie consumption is just enough to maintain weight, with no activity)

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