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Question 1:

A mixture of 70 liters of sugar and water contains 10% water. How many liters of water should be added to the mixture so that the water becomes 20%?

Question 2:

Three containers have their volumes in the ratio $3: 4: 5$. They are full of mixtures of milk and water. The mixtures contain milk and water in the ratio (4:1), (3:1) and (5:2) respectively. The contents of all there three containers are poured into fourth container in the ratio $5: 3: 7$. The ratio of milk and water in the fourth containers:

Question 3:

A merchant has $2,000 \mathrm{~kg}$ of sugar, part of which he sells at $8 \%$ profit and rest at $18 \%$ profit. He gains $14 \%$ on the whole. Find the quantity sold at $18 \%$ profit.

Question 4:

Solution A and B are $16 \%$ and $21 \%$ acidic respectively. In what ratio should solution A and B be mixed to obtain a solution which is $19.5 \%$ acidic.

Question 5:

80 liter mixture of milk and water contains 10% milk. How much milk must be added to make water percentage in the mixture as 80% ?

Question 6:

How much quantity of water must be added to $48 \mathrm{ml}$ of alcohol to make a solution that contains $25 \%$ alcohol?

Question 7:

There are two drums, each containing a mixture of paints A and B. In drum 1, A and B are in the ratio 18 : 7. The mixtures from drums 1 and 2 are mixed in the ratio 3 : 4 and in this final mixture, A and B are in the ratio 13 : 7. In drum 2, then A and B were in the ratio

Question 8:

In 64 liter of pure milk, 20 liter of water is mixed and then $\frac{1}{4}$ th of the mixture is taken out. When $x$ liter of water is added again then ratio of water to that of the milk becomes $1: 2$. Find value of $x$ ?

Question 9:

A vessel contains mixture of milk and water in the ration of 3 : 1 respectively. If 20 liters mixture taken out from the vessel and now the difference between milk and water in the remaining mixture is 70 liters, then find initial mixture in vessel (in liters)?

Question 10:

The ratio of milk to water in 60 liters mixture is $7: 3$. Find how much water should be mixed in the mixture so that quantity of milk becomes $33 \frac{1}{3} \%$ of resulting mixture?