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In each of the following questions a questions is followed by three statements, study the questions and the statements and decided the information given in which of the statement is/are necessary to answer the questions ?

What is the capacity of a cylinder tank ?
I.  The radius of the base is half of its height
II.  The area of the base is 616 sq. meters
III.  The height of the cylinder is 28 meters.

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Important Questions on Averages

MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
The ratio of milk to water is 5:4. If two litres of water is added, the ratio becomes 10:9, then find a new amount of water in the mixture.
HARD
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations

There are three kinds of liquids X,Y,Z. Three jars J1,J2,J3 contain 100 ml of liquids X,Y,Z respectively. By an operation we mean three steps in the following order:

- stir the liquid in J1 and transfer 10 ml from J1 into J2;

- stir the liquid in J2 and transfer 10 ml from J2 into J3;

- stir the liquid in J3 and transfer 10 ml from J3 into J1;

After performing the operation four times, let x,y,z be the amounts of X,Y,Z respectively in J1. Then

MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
18 litres of pure water was added to a vessel containing 80 litres of pure milk. 49 litres of the resultant mixture was then sold and some more quantity of pure milk and pure water was added to the vessel in the ratio of 2: 1. If the resultant ratio of milk and water in the vessel was 4: 1, what was the quantity of pure milk added in the vessel?
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
How many liters of water should be added to a 30 L mixture of milk and water containing milk and water in the ratio 7 : 3, such that the resultant mixture has 40% water in it?
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
A 20 litre mixture contains milk and water in the ratio 3:2. Then 10 litres of the mixture is removed and replaced with pure milk and the operation is repeated once more. At the end of the two removals and replacements, what is the ratio of milk and water in the resultant mixture?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
A mixture contains wine and water in the ratio 3:2 and another mixture contains them in the ratio 4:5. How many litres of the latter must be mixed with 3 litres of the former so that the resultant mixture may contain equal quantities of wine and water?
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
Jar A contains "X" ltr of pure milk only. A 27 ltr mixture of milk and water in the respective ratio of 4:5 is added to Jar A. The new mixture thus formed in Jar A contains 70% milk. What is the value of X?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
The total number of students in a school is 31700. If the ratio of boys to the girls in the school is 743 : 842 respectively, what is the total number of girls in the school?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
What should come in place of the question mark (?) in the following questions?

97+710-143=4× ?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
What will come in place of the question mark (?) in the following questions?

3567.43+2788.17 - ? =1379.56
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
What will come in place of the question mark (?) in the following questions?

34% of 820× ? =6133.6
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
What will come in place of the question mark (?) in the following questions?

5252+2525= ? ×25
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
A milkman purchases the milk at Rs. x per litre and sells it at Rs. 2x per litre. also he mixes 2 litre water with every 6 litres of pure milk. What is the profit percentage?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
What approximate value will come in place of the question mark (?) in the following questions? (You are not required to calculate the exact value).

35×49×5894.92=?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
What will come in place of the question mark (?) in the following questions ?

136 ×15-85 ×12= ?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
What will come in place of the question mark (?) in the following questions ?

?% of 450+20% of 335=251
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
Three types of rice whose rates are Rs. 38, Rs. 43 and Rs. 49 per kg are blended together to make a 15 kg of new blend of rice in which there are 8 kgs, 4 kgs 3 kgs of the respective types of rice. What is The average price of the new blend of rice ?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
What should come in place of the question mark (?) in the following questions?

27 of56 of ?=200
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
What should come in place of the question mark (?) in the following questions?

453-336+110= ? +31
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
By mixing two qualities of pulses in the ratio 2: 3 and selling the mixture at the rate of Rs 22 per kilogram, a shopkeeper makes a profit of 10 %. If the cost of the smaller quantity be Rs 14 per kg, the cost per kg of the larger quantity is: .