Question

After adding solvent to 25% solution,the concentration is changed to 10%. Calculate the amount of solvent added​

Answer 1

Answer:

the sour taste of lemons or oranges is due to

Answer 2

Answer:

15/9

Explanation:

$\bf{\frac{25}{100} = x \: amount} \\ \bf{let \: amount \: be \: 100ml} \\ \bf{25\% \: of \: 100 = 25ml} \\ \bf{ \frac{25 + x}{100 + x} = \frac{10}{100} } \\ \\ 2500 + 100x = 1000 + 10x \\ \\ 1500 = 90x = x = \frac{15}{9}$

i tried my best I think it is wrong