Jessica earned some money for completing chores she spent 1/6 of it on snacks and 1/3 of it on a new book she save the rest what fraction of the money did she save

The amount of money is equal to 1.
 We have then:
 1/6 + 1/3 + x = 1
 Where,
 x: fraction of saved money
 Clearing x we have:
 x = 1 - 1/3 - 1/6
 x = 1/2
 
 she saved 1/2 of the money