Question

19) 5 Two barrels contain a mixture of ethanol and gasoline. The content of the ethanol is
60% in the first barrel and 30% in the second barrel. In what ratio must the mixtures from the
first and the second barrels be taken to form a mixture containing 50% ethanol?
(b) 2:1
(c) 2:3
(d) 3:2
(e) None of these
(a) 1:2​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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$\huge\bold\star\red{\underline{Answer:-}}$

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$\Large\bold\star\green{\underline{Explanation:-}}$

$\Longrightarrow$ Let they are required to be taken in $1 : x$

$\Longrightarrow$ Then according to the question:-

$\Longrightarrow$ $1×6+x×3=(x+1)5$

$\Longrightarrow$ Solving we get x = $\frac{1}{2}$

$\Longrightarrow$ So ratio of first to second = $2 : 1$

$\Longrightarrow$ So the correct option is (b) 2 : 1

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$\bold\star\purple{\underline{That's\ all}}\star$

$\bold\star\orange{\underline{Hope\ it\ helps\ you}}\star$