Question

The numbers on two consecutively numbered gum lockers have a sum of 159. What are the locker numbers?

Answer 1

Let x be the first number then the second number is x+1, then we have:

$\begin{gathered} x+x+1=159 \\ 2x=158 \\ x=79 \end{gathered}$

Then the two numbers are 79 and 80.