The price of a train ticket consists of an initial fee of $
5
$5dollar sign, 5 plus a fee of
$
2.75
$2.75dollar sign, 2, point, 75 per stop. Julia has
$
21
$21dollar sign, 21 and would like to travel
50
5050 kilometers. She wants to know the largest number of stops she can afford to buy on a ticket.

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

x = 23.78

step-by-step explanation: