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

Subtracting Eqn 3 from Eqn 2

Dividing both sides by 3.30

Putting y=155 in Eqn 1

188 children and 155 adults were admitted that day.
Keywords: linear equation, subtraction
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