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Each side of a rectangular field is diminished by 40%. By how much percent is the area of the field diminished ?
Answer & Solution
Correct Answer:
Option
B
By using successive formula
Net decrease in area
$$\eqalign{ & = 40 + 40 - \frac{{40 \times 40}}{{100}} \cr & = 64\% \cr} $$
Net decrease in area
$$\eqalign{ & = 40 + 40 - \frac{{40 \times 40}}{{100}} \cr & = 64\% \cr} $$
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