Question
The ratio of apples to oranges in a basket is 2:1. The average weight of oranges is (w − 3) grams and the average weight of all fruits is (w + 3) grams. Find the average weight of apples.
Solution
Let apples and oranges be '2a' and 'a', respectively.
Total weight of fruits = 3a × (w + 3) = 3aw + 9a
Total weight of oranges = a × (w − 3) = aw − 3a
So, total weight of apples = (3aw + 9a) − (aw − 3a) = 2aw + 12a
Therefore, average weight of apples = (2aw + 12a) / 2a = (w + 6)
More Average Questions
- The average of 40 numbers was calculated to be 52. Later, it was found that two numbers had been taken wrongly as 43 and 57 instead of 63 and 47 respective...
- Five friends each contributed Rs. 70. If the sixth friend gives Rs. 50 more than the average contribution of all six, how much did the sixth friend contrib...
- The average of ‘x’ numbers is 30. If 50% of the numbers are decreased by 6 and the remaining numbers are increased by 8, then find the new average of the ‘...
- A student has two types of markers: Marker A priced at $3 each and Marker B priced at $5 each. If the student purchases a total of 12 markers, with an aver...
- The average age of a group of 24 persons is found to be 28 years. Later it is found that age of two of the persons is calculated as 32 and 64 instead of 87...
- The average marks of 22 students is 64. If x new students join with an average of 75 marks, the class average increases to 66. Find x.
- The average of a set of 's' numbers is 25. If 100 is added to the set, then the average of the set becomes 25.2. Find the value of '4 X (s - 9)'.
- The average weight of 4 persons is 56 kg. The heaviest person’s weight is 30 kg more than the lightest person’s weight. If the average weight of the rest t...
- The average temperature of Monday, Tuesday, Wednesday and Thursday is 50°. The average temperature for Tuesday, Wednesday, Thursday and Friday is 60°. If t...
- The average score of 'x' boys is (x + 5), and the average score of 30 girls is (3x - 10). If the combined average score of all students is 60, then find th...
