Question

A total of 

644

 tickets were sold for the school play. They were either adult tickets or student tickets. There were 

56

 fewer student tickets sold than adult tickets. How many adult tickets were sold?

Answer 1

a + s = 644
s = a - 56

a + (a - 56) = 644
2a - 56 = 644
2a = 644 + 56
2a = 700
a = 700/2
a = 350 <=== adult tickets

s = a - 56
s = 350 - 56
s = 294 ...student tickets