Sean needs to replace 2 light bulbs in his bedroom, 1 in both the bathroom and the kitchen and 4 in the basement. He also needs to replace 1/2 of that amount in the garage. The bulbs come 2 per pack. How many packs will he need? Let's be accurate as possible.
He needs to replace lights in the bedroom, bathroom, kitchen and basement so 2 + 1 + 1 + 4 = 8 lightbulbs. In the garage, he needs to replace half that amount so he needs 8 / 2 = 4 lightbulbs. All total, he needs 8 + 4 = 12 light bulbs. They come 2 per pack and he needs 12 lightbulbs so he needs 12 / 2 = 6 packs of lightbulbs.
The answer: 6.