.
First equation is
     =
 =  ,    (1)
or
    9R = 10J.    (1')
Second equation is
    R - J = 36.    (2)
From the second equation, express  R = J + 36 and substitute into equation (1')
    9*(J+36) = 10J.
Simplify and find J
    9J + 9*36 = 10J
    J = 9*36 = 324.
Thus,  Joshua has 324 dollars.   Ray has 36 dollars more, or 360 dollars.
,    (1)
or
    9R = 10J.    (1')
Second equation is
    R - J = 36.    (2)
From the second equation, express  R = J + 36 and substitute into equation (1')
    9*(J+36) = 10J.
Simplify and find J
    9J + 9*36 = 10J
    J = 9*36 = 324.
Thus,  Joshua has 324 dollars.   Ray has 36 dollars more, or 360 dollars.
Having these numbers, you can get answers to your questions.