Just need some help

Question

In a year, Company A's revenue was 3/5 as large as Company B's revenue, but twice as large as Company C's. Company B's revenue is $3.4 million more than Company A, what were Company C's revenues?

Answer 1

A's revenue was 3/5 as large as B's  ==>  A = (3/5)*B = 0.6*B

A's revenue was twice as large as C's  ==>  A = 2*C

B's revenue is 3.4 million more than A  ==>  B = A + 3.4 

 

Substitute the value for B from the 3rd equation into the 1st equation  ==> 

 

A = (0.6)*(A + 3.4) 

A = 0.6*A + 2.04

0.4A = 2.04

A = 2.04 / 0.4 = 5.1 

 

So C = A/2 = 5.1/2 = $2.55 million 

 

Check:  B = A + 3.4 = $8.5 million 

            A = (3/5)*8.5 = $5.1 million 

            A = 5.1 = 2*2.55 = 2*C = twice C