Exactly 80 liters of 20% are needed.
Let quantity of 20% alcohol solution be added : x liters
Here is the work:
> x*20% + 40 * 50% = (x+40) * 30%
> x*0.2 + 40*0.5 = (x+40)*0.3 ..(converting percentages into decimal)
> 0.2x + 20 = 0.3x + 12
> 20-12 = 0.3x - 0.2x (Rearranging similar terms)
> 8 = 0.1 x
Hence x = 8/0.1
Ans 80 Litres
A few years ago an apparatus was devised for enlarging drawings, &c., from a facsimile ... in the ratio of two In“ gers; then we are told that the corresponding term in the ... And how can we be sure that such integers could not be found in every case! ... will be a satellite of the other; but let us take as an example the ratio 1 to 2.
It is illegal to drive a vehicle while under the influence of Alcohol.
<h3>Why it illegal to drive a
vehicle while under the influence of Alcohol?</h3>
It is illegal to drive a vehicle while under the influence of Alcohol because once you take alcohol, it will make someone to be nub , which can make him to loose concentration on the road.
This can cause serious accident to him and other road users, hence it is illegal so as to protect road user.
Learn more about driving at
brainly.com/question/9380087
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