Just need you to check answer

Larrytsai

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

Math Jeans

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.)

Larrytsai

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

Sleek

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.