math homework help

Question

If 110 people attend a concert and tickets for adults cost $2.75 while tickets for children cost $1.5 and total receipts for the concert was $230, how many of each went to the concert?

Answer 1

A + C = 110

2.75A+ 1.50C = 230

solve by substitution or elimination, or matrix algebra

1.5A+1.5C= 1.5(110)=165

1,25A= 230-165= 65

A=65/1.25 = 52 Adults

C =110-52= 58 Children