It takes 63 minutes for 4 people to paint 9 walls.
how many minutes does it take 7 people to paint 4 walls?

Depends.

Step-by-step explanation:

Trick question

63 minutes. They all paint at the same time.

Real math

63/4=15.75 minutes for each person to paint a wall.

15.75*7 people= 110.25 minutes

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.

tip $2.90

total $17.40