Answer:
Explanation:
Let the number of children = c
The number of adults = a
Total people = 528
c + a = 528 ------------------------(I)
Total price = $ 985
1.25c + 2.25a = 985 ---------(II)
Multiply equation (I) by (-1.25).
(I)*(-1.25) -1.25c - 1.25a = - 660
(II) 1.25c + 2.25a = 985 {add, c will be eliminated}
a = 325
Number of adults = 325
Plugin the value of a in equation (I)
c + 325 = 528
c = 528 - 325
c = 203
Number of children = 203