Multiple choice

If the length of a rectangle is decreased by 20% and the breadth is increased by 30%, find the change in the area of the rectangle.

  1. 4% decrease

  2. Data insufficient

  3. 56% increase

  4. 4% increase

  5. 10% increase
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the length be l and the breadth be b. New area = 0.8 * l * 1.3 * b = 1.04 lb So, area increases by 4%.

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