On Thursday, a local hamburger shop sold a combined total of 351 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the number of hamburgers sold. How many hamburgers were sold on Thursday?

X is cheeseburgers and y is hamburgers x + y = 351 2x+y=351 Now I can do 351 divided by 3 which gives me 117. Since 117+117+117 is 351 and the number of cheeseburgers sold was twice the amount as hamburgers. I will say that there was 117+117 cheeseburgers sold and there were 117 hamburgers sold. Hope it makes sense ...

If there are only two options, and one is double of the other, then one is 2/3 and the other is 1/3 of the question (total being 3/3, or one whole) So ... 351/3=117, so 117 hambergers were sold. 117*2=234, so 234 cheeseburgers were sold