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The correct answer is C
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 ...
In a company, the average age of 40 employees is 20 years. When the ages of two managers, one 'a' years old and the other 'a + 10' years old, are includ...
The average number of taxis of three colours (black, white and yellow) in a taxi stand is 160. The number of black taxis is 65 more than that of yellow ...
The average age of three children is 25 years. If their ages are in the ratio 2:6:7. Find the age of the youngest child.
The average number of taxis of three colours (black, white and yellow) in a taxi stand is 150. The number of black taxis is 50 more than that of yellow ...
Average of 8 numbers is 80. If average of first four and last two numbers is 90 and 60, respectively then find the fifth number given that ratio of fift...
The average of five consecutive odd numbers is 45. What is the average of the first three numbers among them?
Average age of a class of 28 students is 10 years. Average age of the class is increased by 12 months if the age of the teacher is included. Find...
The average score of five students is 24. When the scores of two additional students are included, the average drops by 2. What is the combined total of...
The average cost of three chairs is Rs.12000. The average cost decrease by 18% when one more chair is included. What is the cost price of the 4th
