Question
The ratio of the ages of A, B and C, 5 years ago, was 4
: 5 : 7. The sum of their present ages is 135 years. What will be the sum of the ages (in years) of B and C, 3 years from now?Solution
The correct answer is C
The average of 27 numbers is 20.The average of first 13 numbers is 15 and that of the last 13 numbers is 18. What will be the 27th number?
The average expenditure of a man for the first 9 month is Rs.5000 and for the next 3 months is Rs.8000. If he saves 12000 in that year then find his ave...
Mishti bought 20 kg apples for Rs 60 per kg, b kg apples for Rs 70 per kg and (b + 6) kg apples for Rs 50 per kg. She mixed all type of apples together ...
The average weight of 4 persons is 44 kg. The heaviest person’s weight is 30 kg more than the lightest person’s weight. If the average weight of the...
The average of the first 6 numbers is 'x+40', the average of the next 8 numbers is 'x', and the average of the remaining 6 numbers is 'x−10'. If the a...
The average marks of 'm' students in a math test is (m + 5) and the average marks of 30 girls is (2m - 10). If the average marks of all students togethe...
The average weight of 8 persons increased by 1.5 kg when a person weighing 65 kg is replaced by a new person. What could be the weight of a new person?
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...
What is the average of the squares of the first 41 natural numbers?
- Kohli smashed 150 runs, contributing 75% of the team’s total. Given that extras amounted to 20 runs, what was the total contribution from the rest of the...
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