How do you subtract when there are zero's at the end? for ex. 1000-325 how'd you borrow from 1000?
(sorry i haven't done subtraction in a while.)

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.

answer: y=0 if that is what u r looking for