Homework Help: Math

Posted by StuartKess on Friday, October 21, 2011 at 6:38am.

Banana bought 3 companies for
A :$20000000
B : $250000000
G : $350000000

He made a profit of $(9.6x10^6) when he sold the companies. He also made a profit of 25% on A and loss of 10% on B. Find the percentage profit he made on G.

How do I do this? What are the fixed steps? Thanks so much! :)))))

Math - Steve, Friday, October 21, 2011 at 12:50pm
Let a,b,g be the cost of the companies
To make things simpler, let's deal in millions (10^6)

1.25a = 20
.9b = 250

a = 16
b = 277.77777

profit on a = 4
profit on b = -27.77777

profit on g = 9.6 -(4-27.777) = 33.3777

g = 350-33.3777 = 316.62222

%profit on g is profit/cost = .105 = 10.5%

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