The correct answer is D
The average age of a class of 18 girls is 14 years. If 2 new girls having average age of 10 years join the class, then the average age of the class beco...
The average of two numbers is 25, and the square root of their product is 20. What is the difference between the two numbers?
The average score obtained by 10 students in a class test is 68 marks. The top place was shared by 3 people who got the same score. If the lowest score ...
Consider a group consisting of 16 females with an average age of 25 years and 20 males with an average age of 35 years. What is the approximate average ...
Four numbers are arranged in ascending order. When the first two numbers are increased by the number equal to their position, and the last two numbers i...
The average of 18 numbers is 36. If 4 is added to each number, then the new average will be:
The average cost price of 18 pens (having equal cost price) decreased by Rs.2, when one of the pen is replaced by a new pen having cost price of Rs.74. ...
Mixture X comprises juice and water in a 5:4 ratio, and mixture Y consists of juice and water in a 7:9 ratio. When mixture X is combined with mixture Y,...
The average expenditure of a man for the first 3 month is Rs.6000 and for the next 9 months is Rs.7500. If he saves 15000 in that year then find his ave...
The average of 8 numbers is 22. When two new numbers 'p' and 'q' are added, the average increases by 3. If p - q = 10, find the value of q.
