Question 1176928
Alexander says, if Joshua gives me $45, he will have half as much as Zachary
j - 45 = {{{1/2}}}z
z = 2(j-45)
z = 2j - 90
 But if Zachary gives me $45 then three of us will have the same amount.
z - 45 = j
replace z with (2j-90)
(2j-90) - 45 = j
2j - 135 = j
2j - j = 135
j = $135 Josh's amt 
find z
z = 2(135) - 90
z = 270 - 90
z = $180 Zack's amt
 What is the total amount of money that Alexander, Joshua and Zachary have among themselves.
Alexander's amt is also $135 after receiving 45 from Zack so he must have had $90 originally
135 + 180 + 90 = $405 is the total amt (3*135=405 also)