Question

2 Litres of a liquid containing 60% of alcohol. How much alchohol would be added to obtain one containing 75% alcohol

Answer 1

@ganeshie8 asking again to try to get easier understanding

Answer 2

Is this 75% by total content or by volume?

Answer 3

(is this a math or a chemistry problem?)

Answer 4

two litres contain \(60\%\) alcohol
that means \(1.2\) litres is alcohol and \(0.8\) litres is other liquid
let the \(x\) litre alcohol should be added to make it \(75\%\) of the liquid
so
\(\large\tt \begin{align} \color{black}{(1.2+x)=(75\%)(2)\\~\\
(1.2+x)=(\dfrac{75}{100})(2)\\~\\
}\end{align}\)

Answer 5

this is an easy problem of alligation and mixture

Answer 6

what is ur answer

Answer 7

wait sry

\(\large\tt \begin{align} \color{black}{(1.2+x)=(75\%)(2+x)\\~\\
(1.2+x)=(\dfrac{75}{100})(2+x)\\~\\
}\end{align}\)

Answer 8

this should be correct

Answer 9

wait so what is ur answer

Answer 10

http://www.wolframalpha.com/input/?i=%281.2%2Bx%29%3D%28%5Cdfrac%7B75%7D%7B100%7D%29%282%2Bx%29

Answer 11

\(2+1.2=3.2\\
3.2\times 0.75=2.4=1.2+1.2\)

Answer 12

when i started studying these types of problem , they were so confusing