Once you attempt the question then PrepInsta explanation will be displayed.

Total amount in the vessel = 100L

After removing 30% of mixture:

Remaining acid = 80 \times \frac{100-30}{100} = 56L [/latex]

Remaining aqua = 20 \times \frac{100-30}{100} = 14L [/latex]

Now 2 litres aqua has been added to the mixture.

Therefore,Remaining aqua = 14 + 2 = 16L

Again,after removing 25% mixture:

Remaining acid = 56 \times \frac{75}{100}

=42L

Remaining aqua = 16 \times \frac{75}{100}

=12L

Now 3 litres acid has been added to the mixture.

Therefore, Remaining acid = 42 + 3 = 45L

Required percentage= \frac{12}{12+45} \times 100

=21.05%

Login/Signup to comment