# SSC CHSL MATHS QUIZ

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## 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:

In an alloy there is $24 \%$ of copper. To get 69 $\mathrm{kg}$ of copper. How much alloy will be required.

## Question 3:

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 4:

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 5:

80% and 90% pure acid solutions are mixed to obtain 20 litres of 87% pure acid solution. Find the quantity (in litres) of 80% pure acid solution taken to form the mixture.

## Question 6:

75 litres of a solution contains $25 \%$ alcohol and the rest water. If 45 litres of water is mixed in it, then what is the percentage of alcohol in the new solution?

## Question 7:

Two alloys A and B have silver and copper in the ratio 5 : 1 and 7 : 2 respectively. In what ratio should they be mixed for 80% silver in the mixture?

## Question 8:

There is a mixture of milk and water having ratio $4: 1$. A milkman replaces 16 litres of mixture by 16 litre of water then this ratio becomes $4: 5$. Find the quantity of the original mixture?

## Question 9:

Two Jar $\mathrm{P}$ and $\mathrm{Q}$, both contain $20 \%$ milk. The quantity of Jar $\mathrm{P}$ is 4 times than that of quantity of Jar Q. Both jar mixture are mixed and form new mixture $R$ and 15 liters of water is added. The final ratio of water to milk is now $19: 4 .$ Find the initial quantity of milk Jar Q.

## Question 10:

The average monthly salary of all the employees in a factory is Rs. 12460 . If the average salary of all the officers is Rs. $17097.5$ and that of the remaining employees is Rs. 8750 , then what $\%$ of the total employees are the officers?