Bertha plays tennis. Every ten games, one of her tennis balls wears out. Every five games, she loses a ball. Every four games, she buys a canister of three balls. She started with two balls and gave one to her partner. After twenty games, how many tennis balls does she have? Let's think step by step and output the final answer after "####".
user
Bertha wears out 20 / 10 = <<20/10=2>>2 tennis balls in 20 games.
She loses 20 / 5 = <<20/5=4>>4 tennis balls in 20 games.
She buys canisters of 3 * 20 / 4 = <<3*20/4=15>>15 tennis balls in 20 games.
Bertha started with 2 balls and gave 1 away, so she has 2 + 15 - 2 - 4 - 1 = <<2+15-2-4-1=10>>10 tennis balls after twenty games.
#### 10
Bertha plays tennis. Every ten games, one of her tennis balls wears out. Every five games, she loses a ball. Every four games, she buys a canister of three balls. She started with two balls and gave one to her partner. After twenty games, how many tennis balls does she have?
train