Answer :
Hi
let's call X : adults entries and Y = students entries
so : 5X+Y = 2 679 and X+Y = 1 127 so Y = 1127 -X
so : 5X +1127-X = 2 679
4X = 2679 -1127
4X = 1552
X = 1552 /4 = 388
so there is 388 adults tickets sold
So as X = 388
we have : 388 +Y = 1127
Y = 1127 -388 = 739
let's check : 5 * 388 + 739 =2679
388 + 739 = 1 127
Answer: 388 adult tickets were sold and 739 children tickets were sold.
Step-by-step explanation:
5a + 1s=2,679
1a + 1s = 1,127 solve by elimination
5a + 1s = 2679
-5a - 5s= - 5635
-4s= -2956
s = 739
5a + 1(739) = 2679
5a + 739= 2679
-739 -739
5a = 1940
a= 388