Of the 50 apples in a box, 14 are golden and the others are red. 3 of the golden apples are rotten. If the total number of rotten apples is 9, the number of good red apples is   

Solution

ATQ, Total number of apples = 50 Number of golden apples = 14 Number of red apples = Total apples - Golden apples = 50 - 14 = 36 Number of rotten golden apples = 3 Total number of rotten apples = 9 Now, we need to find the number of good red apples. Since the total number of rotten apples is 9 and 3 of them are golden, the remaining 6 must be red. Therefore, the number of good red apples is the total number of red apples minus the rotten red apples: Good red apples = Total red apples - Rotten red apples = 36 - 6 = 30 So, the number of good red apples is 30.