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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?

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Important Questions on Averages

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?
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
Ranu’s monthly salary is four-fifth of Ali’s monthly salary. Ranu and Ali save one-fourth and two-fifth amount from their respective monthly salary. If the difference between the amount saved by Ranu and that saved by Ali is Rs. 7000, what is Ranu’s monthly salary?
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?
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.
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
A certain amount of money has to be divided between two persons P and Q in the ratio 5:7. But it was divided in the ratio 2:5 and thereby Q gets an additional Rs.33. Find the total amount.
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
Divide 27 into two parts so that 5 times the first and 11 times the second together equal to 195. The ratio of the first and second part is _____.
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
A sum of Rs. 221 is divided among X, Y and Z such that X gets Rs. 52 more than Y. Y gets Rs. 26 more than Z. The ratio of the shares of X, Y and Z respectively is
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
The respective ratio between two positive numbers (X and Y) is 3:5. When 2 is added to both the numbers, the ratio between them becomes 5:8. What is the difference between both the numbers?
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
A certain sum is divided among A, B and C in such way that A gets Rs. 40 more than half of the sum. B gets Rs. 120 less than three-eighths of the sum and C gets Rs. 200. What is the total sum?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
52% students from a college participated in a survey. What is the respective ratio between the number of students who did not participate in the survey to the number of students who participated?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
Six men can complete a piece of work in 35 hours. In how many hours will 15 men complete the same piece of work?
HARD
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
In a college, the ratio of boys to girls is 31 : 23 respectively. When 75 more girls join the college, this ratio becomes 124 : 107. How many more girls should join the college to make the number of boys and girls equal ?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
The ratio of income and expenditure of a family is 10 : 7. If the expenditure of his family is Rs. 10500, what is his saving?
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
The total number of students in a school is 2140. If the number of girls in the school is 1200, then what is the respective ratio of the total number of boys to the total number of girls in the school ?
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
Read the following information carefully and answer the questions given below it.

Five sports - Hockey, Cricket, Tennis, Badminton and Baseball are included in sports competition. The total number of players in this sports competition is 800. The ratio between the men and women players is 1 :3.25% players in Cricket of total players. 110 players plays Badminton, 10% players in Tennis of total players. Hockey players are two times than Badminton players, remaining players play Baseball. 30% Cricket players are women. Half women cricketers are equal to Badminton players. 10% players of Hockey players are equal to women Tennis players. Hockey and Baseball have equal women players.

What is the ratio between the women Hockey players and men Badminton players?
MEDIUM
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
The ratio of 43.5 : 25 is same as:
EASY
Quantitative Aptitude>Arithmetic>Averages>Mixtures and Alligations
Profit earned by an organization is distributed among officers and clerks in the ratio of 5 : 3. If the number of officers is 45 and the number of clerks is 80 and the amount received by each officer is Rs 25,000, what was the total amount of profit earned?