If the length of a rectangle is increased by 40% and the breadth is decreased by 20%, then the area of the rectangle increase by x%. Then the value of x is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 12
| Application |
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Change in area = x% = = + 40 - 20 + (+40)(-20)/100 = 20 - 800/100 = 20 - 8 = 12 |
| x = 12% |