Noah’s bedroom light uses 6 watts per hour

Noah’s bedroom light uses 6 watts per hour. His office light is much brighter so he can see to work and uses three times as much energy. The living room light has a much larger space to cover and has to be more powerful, so it uses four times as much energy as his bedroom light. If Noah leaves all those lights on for two hours, how many watts has he used?

GSM8K — Grade School Math 8K (Cobbe et al., OpenAI, 2021) · train #2879