Kerala LDC · Simple Arithmetic and Mental Ability
Average of numbers, ages, marks and money.
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Q1 · Average · EASY
The average of five numbers is 48. If one of the numbers is excluded, the average becomes 45. What is the excluded number?
Q2 · Average · EASY
The average age of 30 students in a class is 14 years. If the teacher's age is included, the average increases by 1 year. What is the age of the teacher?
Q3 · Average · MEDIUM
The average of 6 numbers is 25. If each number is multiplied by 4, what will be the new average?
Q4 · Average · MEDIUM
The average marks of 40 students in an examination is 65. Later it was found that the marks of one student were wrongly entered as 73 instead of 37. What is the correct average?
Q5 · Average · HARD
The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 55 kg. What is the weight of the new person?