Robs school is selling tickets to a choral performance. on the first day of ticket sales the school sold 6 adult tickets and 2 children tickets for a total or $78. the school took in $84 on the second day by selling 3 adult tickets and 6 children tickets. what is the price of one adult ticket and one child ticket

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.