Shyam placed apples in two cartons, i.e. 200 apples in the first carton and 300 apples in the second carton. After 4 days, he found that in the first carton, 3% of the apples were rotten, while in the second carton, 8% of the total apples were rotten. In all, how many apples were not found rotten?

Total number of apples in the first carton = 200 The number of rotten apples in the first carton = 3% × 200 = 6 apples Total number of apples in the second carton is 300 The number of rotten apples in the second carton are 8% × 300 = 24 apples Total number of rotten apples is 6 + 24 = 30 apples Total number of apples in both the cartons is 200 + 300 = 500 Hence, the total number of apples which were not found rotten is 500 – 30 = 470 apples Thus, option (3) is correct.