The contents of a certain box consist of 14 apples and 24 oranges. How many oranges must be removed from the box so that 70 percent of the pieces of fruit in the box will be apples? Choose the correct choice from the following choices.
A) 18
B) 6
C) 14
D) 17
E) 20

Rationale: "the objective here is that 70 % of the fruit in the box should be apples . now , there are 14 apples at start and there is no talk of removing any apples , so number of apples should remain 14 and they should constitute 70 % of total fruit , so total fruit = 14 / 0.7 = 20 so we should have 20 - 14 = 6 oranges . right now , there are 24 oranges , so to get to 6 oranges , we should remove 24 - 6 = 18 oranges . answer a"
Answer: A