The ratio of girls to boys in Liza's classroom is 5 to 4. How many girls are in her classroom if there is a total of 27 students?

15

Step-by-step explanation:

5 to 4=9

10 to 8=18

15 to 12= 27

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.