In order to find out how many lightbulbs Jaoquin used, we need to subtract the number of lightbulbs he has left from the number he bought.
Jaoquin bought 3 dozen lightbulbs, which is equivalent to 3 x 12 = <<3*12=36>>36 lightbulbs.
He has 15 lightbulbs left.
To find out how many lightbulbs he used, we subtract the number left from the number he bought:
36 - 15 = <<36-15=21>>21
Jaoquin used 21 lightbulbs.
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Jaoquin buys 3 dozen lightbulbs. After changing the lightbulbs in his house, he has 15 lightbulbs left. How many lightbulbs did he use?
(3 points)
1 answer