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each can of paint will cover 450 tiles. Augustin is painting 300 tiles in his bathroom, 675 in his kitchen, and 100 in his hallway. how many cans will je need to buy

Sagot :

Well, first you must find the total amount of tiles that Augustin needs to paint. 
 So, 300 from the bathroom
       675 from the kitchen
  +   100 from the hallway
--------------------
  All together, 300+675+100=1075.
Because each can covers 450 tiles, and you are trying to find how many cans you Augustin needs, you woud divide 1075 by 450. 
1075/450 is 2.38888888 is not a full number, and you can not have part of a can. You also would not round downward, because then you wouldn't paint all the tiles. Therefore, you would round upward to 3.
Augustin will need 3 cans of paint.