Respuesta :
According to the given statement, there were 58 children, 29 adults and 64 students.
What is an equation?
Algebraically speaking, an equation is indeed a statement that establishes the equivalence of two mathematical equations.
Briefing:
Let there be x number of children, y number of students and x/2 number of adults. Forming the first equation based on number of students -
x + y + x/2 = 151 : Equation 1
Multiply equation 1 with 2
2x + 2y + x = 302 : Equation 2
3x + 2y = 302 : Equation 3
y = (302 - 3x)/2 : Equation 4
Forming second equation based on cost -
5x + 7y + 12x/2 = 1086 : Equation 5
Rewriting this equation
5x + 7y + 6x = 1086 : Equation 6
11x + 7y = 1086 : Equation 7
Keep the value of y from equation 4 in equation 7
11x + 7(302 - 3x)/2 = 1086
11x + (2114 - 21x)/2 = 1086
22x + 2114 - 21x = 2172
x = 2172 - 2114
x = 58
Now,
y = (302 - 3x)/2
y = (302 - 3×58)/2
y = 128/2
y = 64
Number of adults = 58/2
Number of adults = 29
Thus, there were 58 children, 29 adults and 64 students.
To know more about equation visit:
https://brainly.com/question/649785
#SPJ4