Dojo
Admin
Number of posts: 154
Location: Probably somewhere near a computer
Registration date: 2008-08-13
 |  Subject: Lesson 1, Problem 3  Sat Aug 16, 2008 12:03 pm | |
| Find x in all the following: a) 2x=4 b) 5x=25 c) 39x=3
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~Dojo
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isabella2296
Admin
Number of posts: 45
Location: You'd really like to know, wouldn't you?
Registration date: 2008-08-16
| | Subject: Re: Lesson 1, Problem 3 Sat Aug 16, 2008 12:08 pm | |
| | Dojo wrote: | Find x in all the following:
a) 2x=4
b) 5x=25
c) 39x=3 |
a) x = 2
b) x = 5
c) x = 13 |
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AIME15
Hardcore TMF user
Number of posts: 163
Age: 13
Location: Pleasanton, CA
Registration date: 2008-08-13
| | Subject: Re: Lesson 1, Problem 3 Sat Aug 16, 2008 12:39 pm | |
| Izzy on c, your wrong. 39x=3: divide by 39 to get x=3/39 so x=1/13, not 13. |
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Dojo
Admin
Number of posts: 154
Location: Probably somewhere near a computer
Registration date: 2008-08-13
| | Subject: Re: Lesson 1, Problem 3 Sat Aug 16, 2008 2:31 pm | |
| AIME15 is right on c. That's the little trick I thought I'd put in. 
_________________
~Dojo
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isabella2296
Admin
Number of posts: 45
Location: You'd really like to know, wouldn't you?
Registration date: 2008-08-16
| | Subject: Re: Lesson 1, Problem 3 Sat Aug 16, 2008 2:53 pm | |
| Oops, I thought it said 3x = 39. |
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