Question: Out of the 200 apples in an orchard, 40 percent were rotten. Also, 70 percent of the rotten apples smelled. How many rotten apples in the orchard did not smell? Think carefully first, then make a decision:
The number of apples in the orchard which were rotten is 40 / 100 * 200 = 80. Out of the 80 rotten apples, 70 / 100 * 80 = 56 were smelling. The number of rotten apples in the orchard which were not smelling is 80 - 56 = 24. So the answer is 24.