Jaoquin Buys 3 dozen lightbulbs. After changing the lightbulbs in his house, He has 15 left over. How many lightbulbs

did he use?

Please explain how you got the answer.

HE USED 21 LIGHTBULBS . BEUASE 12 THINGS IS A DOZEN AND 12x3=36. THEN I DID 36-15=21.

Yes, you're right, Bob.

am I right Mrs.sue

To find out how many lightbulbs Jaoquin used, we need to subtract the number of lightbulbs he had left over from the total number of lightbulbs he initially bought.

Jaoquin bought 3 dozen lightbulbs, and since a dozen is equal to 12, we can calculate the total number of lightbulbs he bought as follows:

3 dozen = 3 x 12 = 36 lightbulbs

Now, we need to subtract the number of lightbulbs he had left over, which is 15. Therefore, the calculation would be:

36 (total lightbulbs) - 15 (leftover lightbulbs) = 21

Hence, Jaoquin used 21 lightbulbs in his house.

21