The answer is: John spent 35 dollars.
Step-by-step explanation:
Key:
J= John P= Paul H= Henry
How much did Paul spend?
3P+J= 65
P+J=45 Subtract
_______
2P=20
P=10
How much did John spend?
P+J=45
J= 45-P
J= 45-10
J=35
How much did Henry spend?
H= P*3
H=10*3
H=30
-KEP
