188 children and 155 adults were admitted that day.
Step-by-step explanation:
Given,
Cost of one children admission = $2.50
Cost of one adult admission = $5.80
Number of people entered = 343
Total admission fees collected = $1369
Let,
Number of children admission = x
Number of adult admission = y
According to given statement;
x+y=343 Eqn 1
2.50x+5.80y=1369 Eqn 2
Multiplying Eqn 1 by 2.50
[tex]2.50(x+y=343)\\2.50x+2.50y=857.50\ \ \ Eqn\ 3[/tex]
Subtracting Eqn 3 from Eqn 2
[tex](2.50x+5.80y)-(2.50x+2.50y)=1369-857.50\\2.50x+5.80y-2.50x-2.50y=511.50\\3.30y=511.50[/tex]
Dividing both sides by 3.30
[tex]\frac{3.30y}{3.30}=\frac{511.50}{3.30}\\y=155[/tex]
Putting y=155 in Eqn 1
[tex]x+155=343\\x=343-155\\x=188[/tex]
188 children and 155 adults were admitted that day.
Keywords: linear equation, subtraction
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