Which expression is equivalent to -66.1 - (-55.6)?

2nd option -66.1 + 55.6

Step-by-step explanation:

When you subtract a negative it's the same as just adding. It's like a double negative means a positive. 2 minus signs kind of cancel each other out.

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.