Joey has 2/3 of a gallon of ice cream. He divides the ice cream for his friends so that 1/9 of a gallon is in each bowl. How many bowls will he use?
Joey has 2/3 x 9/1 = <<2/3*9/1=6>>6 bowls of ice cream.
Therefore, Joey will use 6 bowls. Answer: \boxed{6}.
To find out how many bowls Joey will use, we need to divide the amount of ice cream he has (2/3 of a gallon) by the amount of ice cream in each bowl (1/9 of a gallon).
First, let's convert the fractions to a common denominator.
The common denominator for 3 and 9 is 9.
So, 2/3 of a gallon becomes (2/3) * (3/3) = 6/9 of a gallon.
Now we can divide the amount of ice cream by the amount in each bowl:
(6/9) ÷ (1/9) = 6/9 * 9/1 = 6/1 = 6
Therefore, Joey will use 6 bowls to divide his ice cream for his friends.
To find out how many bowls Joey will use, we need to divide the amount of ice cream he has (2/3 gallon) by the amount of ice cream in each bowl (1/9 gallon).
To calculate 2/3 divided by 1/9, we need to invert the divisor (1/9) and then multiply it by the dividend (2/3):
(2/3) ÷ (1/9) = (2/3) × (9/1)
To simplify the expression, we multiply the numerators and denominators together:
(2 × 9) / (3 × 1) = 18/3
Now we have 18/3, which can be further simplified by dividing both numerator and denominator by their greatest common divisor, which is 3:
18/3 = (18 ÷ 3) / (3 ÷ 3) = 6/1
Therefore, Joey will use 6 bowls to divide the ice cream among his friends.