The lowest value in the range of the acceptable lengths of the rod is that which is 0.015 cm shorter than the ideal. The highest value in the range is that which is 0.015 cm longer than the ideal. From the given, the ideal length is 30.5 cm. Thus, the answer is 30.485 cm to 30.30.515 cm.
To find the number of apples per basket we divide 90 by 6 to get 15. We know that he buys 15 apples. We now have to divide by 3 to get the number of apples per pie, because we know he used all 15 apples. The answer is 15/3 or 5 apples per pie. 5 apples