so, how many days at each city?

Guys, its me again.

Once again professor leaving us stuff that inst on the curriculum/text book.

need a hand here got like 10 of these to do.

Heres one of them:

Jack and Jill spent two weeks (14 nights) touring Boston, New York City, And Philadelphia, and Washington DC. They Paid $120, $200, $80, and $100 Per night respectively. Their Total bill was $2020. The number of days spent in NYC was the same as the total number days spent in Boston and D.C. They spent 3 times as many days in NYC as they did in philly. How many days did they spend in each city?

Thanks in advance,

Gus (Wink)