Answer:
24
Step-by-step explanation:
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Let Benny's salary = $ K
But kenny earns 142% of Benny's Salary
So, Kenny's salary = 142%of K
Kenny's salary =K 
Kenny's salary = 1.42K
Kenny's income exceeds Benny's by =1.42K - K =$0.42 K
% by which Kenny's salary exceeds by Benny's =
% by which Kenny's salary exceeds by Benny's = 42%
First number - x
Second number - y
3x + 2y = 12.
This expression would represent a linear equation.
Given:
The equation is:

To find:
The missing factor AAA that makes the equality true.
Solution:
We have,

Divide both sides by -2x to isolate A.


Therefore, the value of A is
.