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The correct answer is D
The average age of 22 children and their teacher's age are 20 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
There are 15 numbers such that average of first 12 numbers is 65 while the average of last five numbers is 76. Find the 12th number, if the ratio betwee...
"The average age of all employees in a company is 23.5 years. The average age of male employees is 25.2 years, while the average ...
The average of the first six numbers is four times the average of the next three numbers. If the average of all nine numbers is 24, then find the sum of...
In a classroom, there are 24 male students and 16 female students. The male students have an average age of 16 years, while the female students average ...
Average of 20 numbers is 90. Average of first 8 numbers is 103 while average of last nine numbers is 40. If ninth number is 25% less than the tenth numb...
Average run scored by a batsman in first ‘x’ matches is 55. In next 12 matches he scored runs with an average of 90 so that his overall average incr...
Average age of a class of 25 students is 13 years. Average age of the class is increased by 30 months if the age of the teacher is included. Find the ag...
The average weight of five students in a class is recorded as 58 kg. Two of the students have weights of 48 kg and 54 kg, but their actual weights are 4...
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....
