Initial volume of water = 20 litres
Final volume of water = 14 litres
Leaked volume of water = 6 litres
Time taken to leak the water = 24 hours
Leaked volume in an hour = 6 / 24
= 0.25 litres
X+y=4 :x=4-y,yR
x-y=6:x=6+y,yR
Bryan should have split the 
into <u>four equal parts</u> (not 8). Each smaller part is 
Note how 
reduces to
Since there are 4 smaller parts or groups, this means
Refer to the diagram below.
There are 2.5 grams of niacin contained in the bottle.
First you have to find how many milligrams are in the bottle.
So you multiply 125 by 20 since there are 125 tablets and 20 milligrams in each one.
125*20=2500
So there are 2500 milligrams in the bottle. Then you have to convert it into grams. To do that you divide the mass by 1000.
2500/1000=2.5
So there are 2.5 grams in the bottle.
15 - 2m = how much she has left.
so 15 minus 2 times the cost per book will tell you how much she has left.
