Noah and Ava’s zoo entry tickets are $5 x 2 = $<<5*2=10>>10.

Their round trip bus fare will be $1.50 x 2 x 2 = $<<1.5*2*2=6>>6.

Zoo tickets and bus fare will cost $10 + $6 = $<<10+6=16>>16.

For lunch and snacks, they will have $40 - $16 = $<<40-16=24>>24.

# Answer

24
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Noah and Ava are planning a trip to the zoo.  Zoo entry tickets are $5 per person.  Bus fare is $1.50 per person one way.  If they bring $40 with them, how much money do they have left to spend on lunch and snacks?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
24
Noah and Ava are planning a trip to the zoo.  Zoo entry tickets are $5 per person.  Bus fare is $1.50 per person one way.  If they bring $40 with them, how much money do they have left to spend on lunch and snacks?
train