What is the length of MN
A. 16
B. 12
C. 8
D. 4

since angle L= angle N

it is isosceles triangle

3x=X+8

3x-x=8

2x=8

X=8\2

X=4

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.