Question

Math padhne walo ye question kar ke dekhao .
genius of math solve karo .
thnks ......​

Answer 1

HEY MATE !!!

800 ml of 15% alcohol solution will contain

$\frac{15}{100} \times 800 \\ = 120ml \: of \: alcohol$

add x ml of pure alcohol to 800 ml to make it 32% Solution

thus amount of alcohol = X + 120 ml

total amount of solution= 800 + X ml

hence to get 32% solution

$\frac{x + 120}{800 + x} \times 100 = 32 \\ 25x + 3000 = 6400 + 8x \\ 17x = 3400 \\ x = 200ml$

therefore ad 200 ml of pure alcohol to get 32% solution

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