Multiple choice

If the length of the rectangle is decreased by 20% and breadth is decreased by 40%, then what will be the percentage decrease in the area of the rectangle?

  1. 48%

  2. 52%

  3. 60%

  4. 40%

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

New length = 80% of original (0.8L), new breadth = 60% of original (0.6B). New area = 0.8 × 0.6 × LB = 0.48LB. Percentage decrease = (1 - 0.48) × 100 = 52%.