Answer:
Option "A" is correct.
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Explanation:
First find the volume of each chocolate ball by the formula provided
*note that there is radius required in the formula that's why we have to convert the diameter in to radius by dividing it by two*
i.e. radius = diameter / 2
=> radius = 0.75/2 = 0.375 inches
THUS the volume of each chocolate ball is equal to

Here it is also mentioned that each ball occupy 190% of its original volume thus 190% of 0.22 = 0.22×190 / 100 = 0.418
NOW volume of the pack
= 7.5×3×3 = 67.5
THUS the total number of balls that the pack can occupy
= 67.5 / 0.418 = 161....(approx equal to the given 160)
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