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?
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
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Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
You are solving math problems. Here are some examples of how to solve the task:

Méliès bought 2 kg of meat. The meat costs $82 per kilogram. Méliès has $180 in his wallet. How much money does he have left after paying for the meat?Méliès paid 2 x $82 = $<<2*82=164>>164 for the 2 kg of meat.
So he has $180 – $164 = $<<180-164=16>>16 left.
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Penelope has 5 M&M candies for every 3 Starbursts candies. If she has 25 M&M candies, how many Starbursts candies does she have?Let 5 M&M candies and 3 Starbursts candies be referred to as the unit amounts of each candy.
5 M&M candies make one unit so 25 makes 25/5 = <<25/5=5>>5 units of M&M candies
For every unit of 5 M&M candies, there is a corresponding unit of 3 Starbursts candies so for 5 units of M&M, she has 5 units of 3 Starbursts candies which is = 5*3 = <<5*3=15>>15 Starbursts candies.
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Now, solve this next question in the style of the above examples:

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?

### Response:
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
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