John buys thank you cards.  He decides to buy them for people who got him Christmas and birthday presents.  He sent 20 for Christmas gifts and 15 for birthday gifts.  If each card cost $2 how much did he spend on cards? Let's think step by step and output the final answer after "####".
user
He bought 20+15=<<20+15=35>>35 cards
So he spent 35*2=$<<35*2=70>>70
#### 70
John buys thank you cards.  He decides to buy them for people who got him Christmas and birthday presents.  He sent 20 for Christmas gifts and 15 for birthday gifts.  If each card cost $2 how much did he spend on cards?
train