Rex spent $105 on a wallet and 2/5 of his remaining money on a T-shirt. He then had 1/3 of the total amount of money left. How much did the T-shirt cost?
+37146 x = starting amount
x - 105 amount after wallet
3/5 (x-105) amount after t shirt and this equals 1/3 x
3/5 (x-105) = 1/3 x
4/15x = 63
x = 236.25
2/5 ( 236.25 - 105) = 52.50 <==== shirt price
