21:3
9:3
3:1
there all a 3:1 ratio
9. increase
10. decrease
11. increase
12. decrease
13. decrease
14. decrease
15. increase
16. increase
First we define variables:
x: Money Peter receives
y: Money Paul receives
z: Money Jane receives
We write the system of equations:
x / y = 13/12
x / z = 13/7
x = z + 78
Solving the system we have:
x = $ 169
y = 156 $
z = 91 $
Answer:
Paul gets 156 $
Answer:
1/5
Step-by-step explanation:
Divide 45 by 9. = 5. = 1/5