Can you please help me with this math problem! Use algebra Thanks?

Question

John and Paul spent $45 altogether. John and Henry Spent $65 altogether. If Henry spent 3 times as much as Paul, how much did John Spend.

Please show variables and work :) Thanks!

oh my Gosh. Who's right?

Answer 1

J+P=45--a)
J+H=65--b)
H=3xP--c)
therefore:
b)==J+3P=65.
using it and a)===
2P=20
therefore P=10
J=35
therefore john spent $35

Answer 2

Let Paul spend x. Henry spent 3x. John spent 45 - x

45 - x + 3x = 65 (John + henry)
2x + 45 = 65
2x = 20
x = 10

John = 45 - x
John = 45 - 10
John = $35

John spends $ 35.

I assure you. I am right

Answer 3

J+P=45
J+H=65
H-3P=0

so H=3P so sub it into the 2nd equation.
so we have J+P=45 (first equation stays the same)
J+3P=65 then you need to cancel one out so make the top one negative -J-P=-45

so you now have 2P=20 P=$10

Answer 4

J+P = 45
J+H = 65
H = 3P

Substitute for H in the second equation
J+ 3P = 65
J+ P = 45

Subtract
2P =20
P = 10
J+P = 45
J+10 =45
J = 35