solving word problem

Question

At a basketball game, a vender sold a combined total of 189

 sodas and hot dogs. The number of sodas sold was 39

 more than the number of hot dogs sold. Find the number of sodas sold and the number of hot dogs sold.

Answer 1

s + h = 189

s = h + 39

We can substitute h + 39 for s in the first equation because they are equal.

h + 39 + h = 189

2h = 150

h = 75

s = 75 + 39

s = 114