# DELHI POLICE HEAD CONSTABLE ALLIGATION QUANT QUIZ-6

Attempt now to get your rank among 46 students!

## Question 1:

20 liters of a mixture contains $20 \%$ alcohol and the rest water. If 4 liters of water be mixed in it, the percentage of alcohol in the new mixture will be?

## Question 2:

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 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:

A trader mixes 15 kg of rice at Rs. 45 per kg with 25 kg of rice of other variety at Rs. 35 per kg and sells the mixture at Rs. 40 per kg. Find his profit or loss percent.

## Question 5:

40 liters of a mixture contains $20 \%$ alcohol and the rest water. If 4 liters of water be mixed in it, the percentage of alcohol in the new mixture will be?

## Question 6:

In a mixture of 55 L. the ratio of milk and water is 7:4. What will be the amount of water to be added to make the ratio 7:6?

## Question 7:

600 grams of sugar solution has $40 \%$ of sugar in it, How much sugar should be added to make it $50 \%$ in the Solution?

## Question 8:

A solution contains acid and water in the ratio 16 : a . When $450 \mathrm{ml}$ of this solution is mixed with 70 ml water, the ratio of acid and water becomes $4: 9$ what is the value of a?

## Question 9:

When 1 liter alcohol is added to the 20 liter mixture of alcohol and water, the quantity of alcohol becomes 50% less than that of water in the mixture. Find the initial ratio of alcohol and water in the mixture ?

## Question 10:

In what ratio should oil costing Rs. 90 per liter be mixed with oil costing Rs. 118 per liter, so that on selling the resultant solution at Rs. 128 per liter, the shopkeeper gains $14 \frac{2}{7} \%$ ?