At a pizza eating competition, down at two more than twice as many slices as the runner-up. if down at 11 slices, then how many slices did the runner-up eat?

The runner up ate 4.5 slices of pizza.

Work:

2x + 2 = 11
-2 -2

2x=9

9 divided by 2 = 4.5

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)