A railroad crew can lay
5

miles of track each day. They need to lay
135

miles of track. The length,
L

(in miles), that is left to lay after
d

days is given by the following function.

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.

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you: : 0

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