If the length of a rectangle is increased by 20% and its breadth is decreased by 20%, then its area:-
Answer & explanation
Correct answer: option 2
Actual : New
L → 5 : 6 (inc. by 20%)
B → 5 : 4 (dec. by 20%)
Area ⇒ 25 : 24 ⇒ -1 (decreased)
So, decreased % = \(\frac{1}{25}\) = 4%