
#1
Sep1207, 09:18 PM

P: 228

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 alot im not asking for much :D 



#2
Sep1207, 09:37 PM

P: 340

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.) 



#3
Sep1207, 09:40 PM

P: 228

oook thnx i just spotted my mistake... i did 354 x 8 instead of 24 and she is rock climbing for 1.5h thnx alot 



#4
Sep1207, 09:45 PM

P: 59

Just need you to check answer
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 = 3894 Grand total = 3894 + 8496 = 12390 Ops, didn't see the previous reply! Regards, Sleek. 


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