Question

A total of

601
tickets were sold for the school play. They were either adult tickets or student tickets. There were
51
more student tickets sold than adult tickets. How many adult tickets were sold?

Answer 1

601 (total tickets) - 51 (difference between 2 types of tickets) divided by 2 (number of types of tickets):

(601-51)/2 =
550/2=275

Answer 2

s=51+a and we are told that:

a+s=601, using s found above in this equation you get:

a+51+a=601

2a+51=601

2a=550

a=275

So 275 adult tickets were sold.