The average score of boys in an examination in a school is 81 and that of the girls is 83 and the average score of the school is 81.8. Then what will be ratio between the number of girls to the number of boys, in the examination
Out of three numbers, the first is twice the second and is half of thethird.
If the average of the three numbers is 56, what will be the sum of the highest number and the lowest number
How many window coverings are necessary to span 50 windows, if each window covering is 15 windows long
The average weight of 45 passengers in a bus is 52 kg. 5 of them whose average weight is 48 kg leave the bus and other 5 passengers whose average weight is 54 kg join the bus at the samestop.
What is the new average weight of the bus
12 boys decided to constribute Rs. 750 each to anOrphange.
Suddenly few of them boys dropped out and consequently the rest had to pay Rs. 150more.
Then the number of boys who dropped out
P, Q, R, S, T and U are six consecutive odd numbers and their average is 52. What is the product of P and U
The average age of a class is 19years.
While the average age of girls is 18 and that of boys is 21. If the number of girls in the class is 16, Find the number of Boys in the class
The mean of 100 observations is 40. It is found that an observation 84 was misread as 48. Then the correct mean is
The average marks of a student in 7 subjects is 85. His average marks in 6 subjects except English is 83. What is his marks in English
In a mixture of three varities of oils , the ratio of their weight is 4 : 5 : 8. If 5 kg of oils of the first variety, 10 kg of the second variety and some quantity of oils of the third variety are added to the mixture, the ratio of the weights of three varieties of oils becomes as 5 : 7 : 9 in the final mixture, find the quantity of third variety of oil was
The average of marks in 3 subjects is224.
The first subject marks is twice the second and the second subject marks is twice thethird.
Find the second subject marks
It costs Rs. p each to send the first thousand messsages and Rs. q to send each subsequent one
. If r is greater than 1,000, how many Rupees will it cost to send r messages
1000 (r - q) + pr
1000(p - q) + qr
1000 (r - p) + pq
1000 p + qr
Sriram was conducting an experiment in which the average of 11 observations came to be 92, while the average of first five observations was 89, and that of the last five was 86. What was the measure of the 6th observation
In a mens hostel, there were 95students.
To accommodate 30 more students the average is decreased by rupees 5. But total expenditure increased by Rs.500.
Find the total expenditure of the hostel now
The average monthly salary of 24 employees in an organisation is Rs.1500.
If the manager's salary is added, then the average salary increases by Rs.400.
What is the manager's monthly salary
A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings
The average of a non-zero number and its square is 11 times thenumber.
The number is
The ratio of speeds of a car, a train and a bus is 5:9:4. The average speed of the car, the bus and the train is 72 km/hrtogether.
What is the average speed of the car and the train together
When all the students in a school are made to stand in rows of 54, 30 such rows areformed.
If the students are made to stand in rows of 45, how many such rows will be formed
20 men went to arestaurant.
Ninteen of them paid Rs.70 each and the twentieth man paid Rs.90.25 more than the average of all the 20men.
What is the total bill
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Average and Interests
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