Author 
Topic 

Haven
Senior Member
USA
28 Posts 
Posted  09/25/2008 : 08:46:19

The information given is: x  t equals 2t  x
If x and t are positive numbers that satisfy the equation above, what is the value of x divided by t?
The answer given was 5/4
How was this answer obtained. An explanation would be greatly appreciated. 


skeeter
Advanced Member
USA
5634 Posts 
Posted  09/25/2008 : 11:12:05

(xt) = 2tx
square both sides ...
xt = 4t4tx+x
0 = 5t4tx
0 = t(5t4x)
since t>0, 5t = 4x ... 5/4 = x/t 


Haven
Senior Member
USA
28 Posts 
Posted  09/25/2008 : 14:29:45

Thanks Again Skeeter. 



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