Answer:
1400 adult admissions.
Step-by-step explanation:
At a museum, adult admission is $13.00
Children admission is $7.50
During one day, a total of 1900 adult and children admissions were collected
And $21,950 in admission fees was collected.
Let adult admissions during that day be x,
And children admissions be y
The simultaneous equation formed is;
x + y = 1900 ... (i)
$13x + $7.50y = $21,950 ... (ii)
Multiplying (i) by 13 and (ii) by 1 we get;
13x + 13y = 24,700 ... (i)
13x + 7.50y = 21,950 ... (ii)
(i) - (ii) we get;
5.5y = 2750
y = 500
So there were 500 children admissions and 1900 - 500 = 1400 adult admissions.