How many adults and children

Question

The Jurassic Zoo charges ​$13 for each adult admission and ​$4 for each child. The total bill for the 205 people from a school trip was ​$1261. How many adults and how many children went to the​ zoo? 

Answer 1

x = number of adults at $13 each

205 - x = number of children at $4 each

13x + 4(205 - x) = 1261

x = 49

205 - x = 205 - 49 = 156

49 adults, 156 children

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