He needs food for 21 days because 3 x 7 = <<3*7=21>>21

The puppy will eat 7 cups of food because 21 x (1/3) = <<21*(1/3)=7>>7

He needs 2 bags of food because 7 / 3.5 = <<7/3.5=2>>2

The food will cost him $4 because 2 x 2 = <<2*2=4>>4

It will cost $14 in total because 10 + 4 = <<10+4=14>>14

# Answer

14
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Mark just got a new puppy that cost $10. He also bought enough food for 3 weeks. He knows the puppy eats 1/3 cup of food a day. A bag of food with 3.5 cups costs $2. How much did all of this cost him?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
14
Mark just got a new puppy that cost $10. He also bought enough food for 3 weeks. He knows the puppy eats 1/3 cup of food a day. A bag of food with 3.5 cups costs $2. How much did all of this cost him?
train