Umm can you be more specific on your question so I can help you need to explain what you need help on
1/2^3=1/8
we have 30 of them so
30.1/8=30/8 => 3 and 6/8 or 3 and 3/4 if simplified
Divide the number sold by the percentage:
72 / 0.12 = 600
Total crop was 600 apples.
If x and 71 degrees are side by side, it can be a complementary if it is exactly 90 degrees, supplementary if it is 180 degrees....
It is 8 because you divided it