00:01
All right, so the question we have here tells us about d20w, which is a solution of 20 % dextrose and 80 % water.
00:17
And you have distilled water that is 0 % dextrose and 100 % water.
00:24
We need to figure out how much of the d20w we have to combine.
00:34
With distilled water to make a solution called d5w that has 5 % dextros and 95 % water.
00:46
Now when it comes to solution problems like these, it's best to use the component of each solution that they all have in common.
00:59
In this case, we really can't use dextrose because distilled water doesn't have any.
01:05
So we're going to use the percentages of water instead.
01:13
So what we're going to do is we're going to take this d20w, and we know it's 80 % water.
01:26
So we're going to convert this all the percent into decimals, 80%, convert into a decimal is 0 .8.
01:39
So 0 .8 of, we don't know how much, so we're going to put x...