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The average salary of a group of 60 employees is Rs. 400. If 6 employees receiving an average salary of Rs. 450 leave the group and 4 new employees rece...
The average age of 24 children and their teacher's age are 21 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
A man purchases cold-drink for three consecutive years. In the first year, he purchases cold-drink at the rate of ₹ 8.00 per litre, in the second year...
The average weight of 32 employees in an office is 38 kg, while the average weight of 6 managers overseeing these employees is 62 kg. If 12 employees an...
Four numbers are arranged in ascending order. When the 1st two numbers are increased by the number equal to their position, and the last two numbers (i....
The average of the first four numbers is 'x+30', the average of the next 10 numbers is 'x', and the average of the remaining 6 numbers is 'x−20'. If t...
In a school, there are 30 male students and 20 female students. The average marks of male students is 58 and that of female students is 62. Calculate th...
The average age of six members of a family is 40 years. If the age of a guest is included, then the average age increases by 12.5%. What is the age (in ...
The average of n numbers is 66. If each of 54% of the numbers is increased by 13 and each of the remaining numbers is decreased by 12, then the n...
