The school that rob goes to is selling tickets to a spring musical. On the first day of ticket sales the school sold 22 senior citizen tickets and 10 child tickets for a total of $126. The school took in $51 on the second day by selling 3 senior citizen tickets and 9 child tickets. Find the price of a senior citizen ticket and the price of a child ticket.

price of a senior citizen ticket = $3.71

Let the price of a child ticket = $4.43

Step-by-step explanation:

Let the price of a senior citizen ticket = x

Let the price of a child ticket = y

On the first day of ticket sales the school sold 22 senior citizen tickets and 10 child tickets for a total of $126. This will be:

22x + 10y = 126 i

The school took in $51 on the second day by selling 3 senior citizen tickets and 9 child tickets. This will be:

3x + 9y = 51 ii

22x + 10y = 126 i

3x + 9y = 51 ii

Multiply equation i by 3

Multiply equation ii by 22

66x + 30y = 378 iii

66x + 198y = 1122 iv

Subtract iii from iv

168y = 744

y = 744/168

y = 4.43

Since 3x + 9y = 51

3x + 9(4.43) = 51

3x + 39.87 = 51

3x = 51 - 39.87

3x = 11.13

x = 11.13/3

x = 3.71

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.