32 + 18 – 7 = 43 44 + 21 – 7 = 58 28 + 12 – 7 = 33
The average of a group of observations is 34.4. If every observation is scaled by a factor of 2.5, what will the resulting averag...
Komal bought 20 kg rice for Rs 30 per kg, b kg rice for Rs 35 per kg and (b + 4) kg rice for Rs 25 per kg. She mixed all type of rice together and the a...
The average weight of 20 students in a class is 52 kg. Two students leave the class, and their combined average weight is 40 kg. Subsequently, six new s...
Average age of company A is 28 years and average age of both companies A and B is 20 years. If the ratio of number of employees in company A and B is 3:...
The average salary of all males and females in an office is Rs.16000 and the total number of females in the office is 16. If the average salaries of mal...
Average of four numbers is 24. Sum of smallest and largest number is 53. If difference between other two numbers is 1, then find the square of second sm...
A frustum of a cone has radii of 5 cm and 3 cm, and a height of 8 cm. What is its volume?
The average mark obtained by 140 candidates in a certain examination is 50. If the average marks of passed candidates are 55 and that of the failed cand...
The average of three numbers is 21. The first number is double the second, and the third number is double the first. Calculate the sum of the first and...
Average run scored by a batsman in 20 innings is 60. In next 6 innings, he scored runs with an average of ‘x’ so that his overall average increases ...
