Question 974988
D = Derek's height
E = Edwin's height
G = George's height
T = total height


-------------------------------------------------------


D = (6/5)*E
E = (5/6)*D


-------------------


D = (5/7)*G
G = (7/5)*D


-------------------------------------------------------


D+G+E = D+(7/5)*D+(5/6)*D
D+G+E = (1+7/5+5/6)*D
D+G+E = (97/30)*D


-------------------------------------------------------


D/T = D/(D+G+E)
D/T = D/((97/30)*D)
D/T = 1/((97/30))
D/T = 30/97


The ratio of Derek's height to the total height is 30/97


------------------------------------------------------------------------------------------------------------------------


If you need more one-on-one help, email me at <a href="mailto:jim_thompson5910@hotmail.com?Subject=I%20Need%20Algebra%20Help">jim_thompson5910@hotmail.com</a>. You can ask me a few more questions for free, but afterwards, I would charge you ($2 a problem to have steps shown or $1 a problem for answer only).


Alternatively, please consider visiting my website: <a href="http://www.freewebs.com/jimthompson5910/home.html">http://www.freewebs.com/jimthompson5910/home.html</a> and making a donation. Any amount is greatly appreciated as it helps me a lot. This donation is to support free tutoring. Thank you.


Jim

------------------------------------------------------------------------------------------------------------------------