Hi, we need help for this qn. Tq!

_________

Mr Suray had some money. He spent $154 on a jacket and 3/8 of the remainder on a shaver. He had 1/3 of his money left.

a) what fraction of the money did he spend in the jacket?

b) how much money did he have at first?

Can someone explain via both branching and model method?