SSC GD CONSTABLE MATHS QUIZ

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Question 1:

In what ratio wheat costing Rs. $17 / \mathrm{kg}$ mixed another wheat costing Rs. $12 / \mathrm{kg}$ to get a mixture costing Rs. $13.5 / \mathrm{kg} ?$

Question 2:

A vessel contains 60 liter of mixture of milk and water in which percentage of water is $30 \%$. How much water should be added to it so that percentage of water becomes $40 \%$.

Question 3:

The ratio of milk and water in the mixture of $5: 2$. If 42 liters of mixture is replaced with water then the ratio of milk and water becomes $2: 5$. What was the initial quantity of milk in the mixture.

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:

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

Question 6:

How much pure water has to be added to 40ml of a solution containing 20% of water to change the concentration of water in the mixture to 40%?

Question 7:

A mixture of $45 \ell$ contains milk and water in the ratio 11: 4 .  $x$  $\ell$ of water is added in mixture to make the ratio of milk and water as $2: 1$. Find the value of ' $2x$ '?

Question 8:

A container contains 120 litres of the mixture of milk and water in the ratio 8:4. If 20 litres of milk are added in this mixture, then what is the final ratio of milk and water in the final mixture?

Question 9:

An alloy contains 40% of silver. 30% of copper and 30% of nickel. How much silver (in kg) should be added to 25 kg of the alloy so that the new alloy contains 50% of silver?

Question 10:

A mixture of acid and water contains 20 percent acid. When 10 litres of water is added to the mixture, then the percentage of acid becomes 15 percent. What is the original quantity of mixture?