At noon, ship a is 170 km west of ship b. ship a is sailing east at 40 km/h and ship b is sailing north at 20 km/h. how fast is the distance between the ships changing at 4: 00 pm?

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.

the answer is two. hope this !