Planning a trip:

a)Where can Simon and Satya buy a pass?
    They can buy a pass from http://www.interrailnet.com/ website.
b)Can they get a cheap rate because they are 17?
    35% off for travellers aged 25 or under on first day of travel.
c)How much will a month's pass cost?
    €139

d)Can they get on any train in Europe,or do they have to book in advance?     Unlimited train travel within and between 30 European countries. e)What are the rules about using the pass in Britain?     Not valid in your own country of residence.     Only European residents can use an InterRail pass. Rail journey to Paris: From LOndon to Paris it takes two hours snd fifteen minutes.Satya and Simon would have to change trains 3 times total.Twice in England at Ebbsfleet and Ashford and then once in France at Lille and arriving Paris at Gare Du Nord. Where Should They Stay? http://www.hostelbookers.com/hostels/france/paris/79775/ I would reccommend Smart Place in Paris as it is few steps from Gare du Nord which is Paris's main train station and metro hub,Smart Place Paris is in a location that offers convenient access to all of Paris. Location near Gare du Nord was good for arriving & getting away; free wifi was good & worked well; kitchen facilities for own cooking were good; free coffee & tea in the morning also good. And the staff were all friendly & helpful which was much appreciated. If you take a train it takes about 20 minutes.