SSC CGL (TIME & WORK) QUANT QUIZ

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Question 1:

The ratio of milk and water in a solution is $20: 7$ and after adding 5 liters of water in it the ratio of milk and water becomes $5: 3$, then find the final amount of water in the final solution.

Question 2:

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 3:

If the ratio of alcohol and water in a mixture of 85 litres is 11 ∶ 6. How much water should be added to make the ratio 5 ∶ 3?

Question 4:

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 5:

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 6:

Two vessels A and B contain acid and water in the ratio 3 : 2 and 7 : 3, respectively. The contents of A and B are mixed in the ratio 4 : 3. What is the ratio of acid and water in the resulting solution?

Question 7:

Solutions A and B contain acid and water in the ratio 4: 3 and 9: 5, respectively. Four liters of solution A is mixed with 5 liters of solution B. What is the ratio of acid and water in the resulting mixture?

Question 8:

$40 \mathrm{~kg}$ of alloy $A$ is added to $63 \mathrm{~kg}$ of alloy $B$. If in alloy $A$, the ratio of lead and tin is $2:3$ and in alloy $B$, the ratio of tin and copper is $2:5$, then find the amount of tin in the new alloy?

Question 9:

In a class of 80 students, 40% are girls and the rest are boys. The average weight of the boys is 55.5 kg. If the average weight of all the students in the class is 54 kg, then the average weight (in kg) of the girls is:

Question 10:

In a mixture of 75 litres, the ratio of milk to water is 3: 2. If the ratio is to be 1: 2, how much water should be added ?