A school organized a trip for its students, the travel cost 1200DZD (Algerian dinars) for all of the students, at the last moment 4 students joined the trip so the price went down by 10DZD for each student.
How many students marked themselves (paid) before the 4 others joined.
Please help and thank you.

I want one

I can't play valve competetive matchmaking, After I start searching I find a certain number of players In-game and players searching both nearby and worldwide but I still can't find anything. I've waited for about 30 mins and couldn't join a game.
I used to play fine before, last game was october 2016.

I don't even know what are pop-tarts.

011000100110100101101110011000010111001001111001

I download at 100kb/s

2017

no

The dot in the middle that appears when you scope in

I play on dx8 and I find the sniper lazer too bright it makes my crosshair almost invisible, So I wanna make it look like it does on dx9 (Less brighter)

I expected math games, disappoint.

I don't celebrate christmas so gimme this

what is christmas

when is the winter sale

How can I force decimal values for x-pos and y-pos on crosshair positioning

i'm really interested in this game and in buying it, is it worth it or not? is there a decent amount of players/servers on it