# The Jurassic Zoo charges $12 for each adult admission and$6 for each child. The total bill for the 205 people from a school trip was $1590. How many adults and how many children went to the zoo? ##### 1 Answer Dec 29, 2016 $60$adults and $145$children went to the zoo. #### Explanation: Let us assume number of adults are $a$, hence number of children are $205 - a$As Jurassic Zoo charges $12 for each adult admission and $6 for each child, the total bill is $12 \times a + \left(205 - a\right) \times 6 = 12 a + 1230 - 6 a = 6 a + 1230$but bill is $1590

Hence $6 a + 1230 = 1590$

or $6 a = 1590 - 1230 = 360$

or $a = \frac{360}{6} = 60$

Hence $60$ adults and $\left(205 - 60\right) = 145$ children went to the zoo.