Answer:
Number of children equals 140
Number of adults equals 125
Step-by-step explanation:
Let's call x the number of children in the park and y the number of adults.
If 265 enter the park, we can write the following equation:
x + y = 265
Additionally, they collect $1.50 per child and $4 per adult, and in total they collecter $710, so
1.50x + 4y = 710
Now, we need to solve the following system of equations
x + y = 265
1.5x + 4y = 710
Solving the first equation for y, we get:
x + y - x = 265 - x
y = 265 - x
Then, replacing y = 265 - x on the second equation, so
1.5x + 4y = 710
1.5x + 4(265 - x) = 710
1.5x + 4(265) - 4x = 710
-2.5x + 1060 = 710
Solve the equation for x
-2.5x + 1060 - 1060 = 710 - 1060
-2.5x = -350
-2.5x/(-2/5) = -350/(-2.5)
x = 140
Finally, we can calculate the value of y
y = 265 - x
y = 265 - 140
y = 125
Therefore, the number of children was 140 and the number of adults was 125.