Tickets to a concert cost $2 for children, $3 for teenagers and $5 for adults. when 570 people attended the concert, the total ticket receipts were $1950. three-fourths as many teenagers as children attended. how many adults attended?

a. 200
b. 150
c. 220
d. 316

 The correct option is (C) 220.

Step-by-step explanation:  Let, c, t and a represents the number of children, teenagers and adults that attended the concert.

Then, according t the given information, we have

Since number of teenagers is three-fourth of the number of children, so we have

So, from equations (i) and (ii), we get

and

Mutiplying equation (iii) by 5 and then subtracting equation (iv), we get

Therefore, from equation (III), we get

Thus, there are 220 adults who attended the concert.

Option (C) is correct.

answer: 16

step-by-step explanation: first you would add 6+6 which equals 12 then add 2+2 which equals 4. then add 12 + 4 which is 16.

hope this ^_^