Answer:
10000
Step-by-step explanation:
x + y = 4 Equation 1
y = 2x -1 Equation 2
-2x + y = -1
x + y = 4
Subtract
You will get
- 3x = -5
Divide by -3
-3x / -3 = - 5 /-3
x = 5/3
Substitute x into equation 1
5/3 + y = 4
y = 4 - 5/3
y = 7/3
x = 5/3 y = 7/3
Hope this helps.
We need the chart or other information.
933.3333333
20x(5/100)=1
That is the interest after one year
Add to the principal:20+1=21
