Answer:
Step-by-step explanation:
Let us take the salary of state B as 'x'
Salary of state A = 53280 + x
Total salary = 284680
Therefore, 53280 + x + x =284680
= 2x = 284680 - 53280
= x = 249400/2
x = 124700
Salary of state B = 124700
Salary of state A = 177980
34= 12+(8)2+(3)2
youre basically just plugging in the numbers to the letter they correspond
3x = 18 - 3 times girls = # boys = 18
x = 6 - # of girls in the class
As with a system of equations, call them A and B in order to keep them straight.
A: x + y = 7
B: x = y + 3
Because in B we have x on one on one side and not x on the other, substitution is the way to go. Substitute equation B into equation A.
x + y = 7 Equation A
y + 3 + y = 7 Putting B into A
2y + 3 = 7 Collect like terms
2y = 4 Subtract 3 on both sides
y = 2 divide both sides by 2
With y = 2 we can substitute that back into an original equation. Choose B.
x = y + 3
x = 2 + 3
x = 5
Thus x = 5 and y = 2, or (5, 2) is the solution of this system.
The answer would have to be 16,125.