Question
The ratio between two numbers is 2:3. If each number is
increased by 6, the ratio between then become 4:5, find the difference between numbers.Solution
The average of series 'S9', which consists of 6 consecutive even numbers, is 19. The second term of series 'T9', which consists of 5 consecutive odd num...
In a warehouse, there are 200 washing machines and 300 microwaves. The average price of a washing machine is Rs. 15,000 while the average price of a mic...
The average age of a class of 20 girls is 12 years. If 4 new girls having average age of 9 years join the class, then the average age of the class becomes:
There are three numbers. If the average of any two of them is added to the third number, the sums obtained are 177, 163 and 138. Whatis the average of ...
The average weight of 4 persons is 36 kg. The heaviest person’s weight is 26 kg more than the lightest person’s weight. If the average weight of the...
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?
The average age of a class of 23 girls is 15 years. If 2 new girls having average age of 10 years join the class, then the average age of the class beco...
A writer wrote a certain number of pages daily for the first 20 days. In the next 10 days, he wrote at an average of 54 pages per day. This increased hi...
The average of 10 observations is 46. It was realized later that an observation was misread as 42 in place of 142. The correct average is:
Determine the average of all prime numbers that lie between 35 and 70.
