Answer:
Elgas is 35.
Step-by-step explanation:
Let's set up an equation.
Alvin is 7 years younger than Elgas.
A = E - 7
The sum of their ages is 63.
A + E = 63
Let's use substitution.
Plug in the first equation of A into the second equation.
A + E = 63
(E - 7) + E = 63
Combine like terms.
2E - 7 = 63
Add 7 to both sides.
2E = 70
Divide both sides by 2.
E = 35
Elgas is 35.
Hope this helps!
 
        
             
        
        
        
In 1992: t=0 and A=169 million 
In 1999: t=7 and P= 174 million 
Solve for k: blah blah blah 
In 2010: t=18 
The answer is : 182 million (trust me)
        
             
        
        
        
Hey! $1.96 x £25,000 = $49,000
 Then to change it back you:
 $49,000 divided by 1.75 = £28,000