The United States uses 4 * 109 megawatt hours of electricity in a year. Mexico uses 2 * 108 megawatt hours in a year. How many times more megawatt hours does the United States use than Mexico in a year?

Around 2 megawatt hours or exactly 2.02 megawatt hours.

Step-by-step explanation:

4 * 109 = 436

2 * 108 = 216

436/216 = 2.018

Therefore, the United States would use around 2 megawatt hours or exactly 2.02 megawatt hours more than Mexico in one year.