The jurassic zoo charges $10 for each adult admission and $8 for each child. The total bill for the 139 people from a school tri
p was $1174.How many adults and how many children went to the zoo?
1 answer:
Answer:
adults=31, children = 108
Step-by-step explanation:
a + c = 139 equation 1
10a + 8c = 1174 equation 2
a=139-c isolate a from equation 1
10(139-c) + 8c = 1174 substitute a value into equation 2
1390-10c + 8c = 1174
-2c = -216
c = 108
use value of c in either equation to find value of a
a + c = 139
a + 108 =139
a = 31
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