EASY
Earn 100

Find the average of the following set of scores.

157, 348, 443, 221, 360, 795, 841, 101

50% studentsanswered this correctly

Important Questions on Averages

EASY

Average of three numbers B, C and D is 1 more than the average of A, B and C. Average of A and D is 19.5.

Quantity 1: Find A.

Quantity 2: 21.

HARD
The average weight of boys in a class is 30 kg and the average weight of girls in the same class is 20 kg. If, the average weight of whole class is 23.25 kg, what could be the possible strength of boys and girls respectively in the same class?
MEDIUM
A batsman played three matches in a tournament. The respective ratio between the scores of 1st and 2nd match was 5:4 and that between the scores of the 2nd and the 3rd match was 2:1. The difference between the 1st and 3rd match was 48 runs. What was the batsman’s average score in all the three matches?
MEDIUM
The average runs of a cricketer in a tournament, in which he played 14 matches, were 47. His average runs in the first seven matches were 57, and that in the last five matches were 44. If the runs made by him in 8th match was 15, how many run did he make in 9th match?
MEDIUM
The average of x, y, z is 24, x:y =2:3, x+y=60, then find x-z.
EASY
There are 5 consecutive odd numbers. If the difference between the square of the average of the first two odd numbers and the square of the average of the last two odd numbers is 588, what is the smallest odd number?
EASY
The average height of 16 students in a class is 142 cm. If the height of the teacher is added the average increases by 1 cm. What is the height of the teacher in cm?
HARD
Jaydeep purchased 25 kg of rice at the rate of Rs. 16.50 per kg and 35 kg of rice at the rate of 24.50 per kg. He mixed the two and sold the mixture. Approximately at what rate per kg did he sell the mixture to make 25% profit?
HARD
A and B are two alloys of gold and copper prepared by mixing metals in the ratio 7 : 2 and 7 : 11 respectively. If equal quantities of the alloys are melted to form a third alloy C, the ratio of gold and copper in C will be :
HARD
In a school with 600 students, the average age of the boys is 12 years and that of the girls is 11 years. If the average age of the school is 11 years and 9 months, then the number of girls in the school is -
EASY
The average of 5 numbers is 306.4. The average of the first two numbers is 431 and the average of the last two numbers is 214.5. What is the third number?
EASY
The average age of a group of 10 students was 15 years. When 5 more students joined the group, the average age rose by 1 year. The average age (in years) of the new students was
HARD
The batting average of 40 innings of cricket player is 50 runs. His highest score exceeds his lowest score by 172 runs. If these two innings are excluded the average of the remaining 38 innings is 48. What was his highest score ?
MEDIUM
Find the ratio in which rice at 7.20 kg be mixed with rice at 5.70 a kg to produce a mixture worth  6.30 a kg?
MEDIUM
Average score of Rahul, Manish and Suresh is 63. Rahul's score is 15 less than Ajay and 10 more than the average sores of Rahul, Manish and Suresh, what is the sum of Manish's and Suresh's scores?
MEDIUM
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 ?
MEDIUM
If the value of 21 a+21 b=1134, what is the average of a+b?
MEDIUM
The cost of the Red, Green and Blue colours per kg is Rs. 20, Rs. 15 and Rs. 18 respectively. Rang Mahal is a renowned building in which these three colours are being used in the ratio of 3 : 2 : 4 . The average cost of all the three colours used per kg is
MEDIUM
A mixture contains milk and water in the ratio 3 : 2. If 4 litres of water is added to the mixture, milk and water in the mixture becomes equal. Find the quantity of milk in mixture in litres.
EASY
The average height of four girls was recorded as 150 cm. If the average of the heights of three girls out of the four was 148 cm, what was the height of the fourth girl?