Calculate Alexandra's Calories Burned in 8 Weeks of Training

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Homework Help Overview

The discussion revolves around calculating the total calories burned by Alexandra over an 8-week training program that includes bicycling and rock climbing. The subject area includes aspects of physical fitness and calorimetry.

Discussion Character

  • Mathematical reasoning, Problem interpretation, Assumption checking

Approaches and Questions Raised

  • Participants present their calculations for calories burned during bicycling and rock climbing, questioning the accuracy of their results and assumptions about the duration of activities.

Discussion Status

Multiple participants have shared their calculations, with one participant acknowledging a mistake in their initial computation. There is an ongoing exploration of the assumptions regarding the duration of rock climbing sessions.

Contextual Notes

There is some ambiguity regarding the duration of rock climbing sessions, with one participant assuming it to be 45 minutes, while another later mentions it could be 1.5 hours. This discrepancy affects the total calorie calculations.

Larrytsai
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A popular website states that a 130 pound person will burn 472 Cal/hr bicyling and 649 Cal/hr rockclimbing. Alexandra (who happens to be 130 pound) has decided to start a training program bicycling for 45 minutes, 3 times/week as well as rockclimbing every saturdays. How many calories does Alexandra burn in 8 weeks of training?

Answer:

10170 cal Burnt in 8 weeks of training

Please check if this is the correct answer Thanx a lot

im not asking for much :D
 
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Well. I worked it out and got 12,390 cal burnt. Here is my work:

Biking:
45 minutes=3/4 hour
472 Cal/hr=354 Cal/45 min
3 times/week for 8 weeks=24 of the 45 minute sessions
354*24=8,496

Rock climbing:
649 Cal/hr=486.75 Cal/45 min
1 session a week= 8 of the 45 minute sessions
486.75*8=3,894

TOTAL: 8,496+3,894=12,390

(This is assuming that the rock climbing on saturdays is for 45 minutes.)
 
Math Jeans said:
Well. I worked it out and got 12,390 cal burnt. Here is my work:

Biking:
45 minutes=3/4 hour
472 Cal/hr=354 Cal/45 min
3 times/week for 8 weeks=24 of the 45 minute sessions
354*24=8,496

Rock climbing:
649 Cal/hr=486.75 Cal/45 min
1 session a week= 8 of the 45 minute sessions
486.75*8=3,894

TOTAL: 8,496+3,894=12,390

(This is assuming that the rock climbing on saturdays is for 45 minutes.)





oook thnx i just spotted my mistake... i did 354 x 8 instead of 24 and she is rock climbing for 1.5h thnx a lot
 
But for how much time does he do rock climbing? You did specify that he does bicycling for 45 mins, 3 times a week. I'm assuming he does rockclimbing for 45 mins every saturday.

For Bicycling

472 Cal/hr, Therefore he'll burn 354 Cal/45min.

In a week, he does that 3 times. So in 8 weeks, 24 times.

Total calories burnt = 24*354 = 8496

For Rockclimbing

649 calories in 60 mins, 1947/4 cals per 45 mins.

He does that 8 times in 8 weeks,

Calories burnt = 8*1947/4 = 3894Grand total = 3894 + 8496 = 12390

Ops, didn't see the previous reply!

Regards,
Sleek.
 

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