Imagine that you are a college student who lives away from home. you have a work-study job at your college library, and you earn about $600 each month. you have one major long-term goal: you want to save up money to visit your family soon, and you need at least $100 for your train tickets.

If you earn about $600 per month it will take one month to buy 3 tickets-one for the ride home, and one for the ride back to school. If you wan't service you should raise another $50. In the end if 10 want service you should be able to but at least 2 train ticket sets per month.

Explanation:

For me,I'll take some little amount of money from my monthly earnings for the sake of my other needs such as visiting my family