out of 450 apples in a shop the 85 apples are found to be rotten.

Wow! That's a lot.

85/450 were rotten

450-85=365
365/450 were not rotten

To find out the number of apples that are not rotten, you would subtract the number of rotten apples from the total number of apples.

Given:
Total number of apples = 450
Number of rotten apples = 85

To find the number of apples that are not rotten, you would perform the following calculation:

Number of non-rotten apples = Total number of apples - Number of rotten apples

Number of non-rotten apples = 450 - 85 = 365

So, out of the 450 apples in the shop, there are 365 apples that are not rotten.