General Aptitude › Percentage › Question #4563
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QIf the side of a square is increased by 55%, what is the increase in its area?

ID: #4563 Percentage 297 views
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  • A 140% ✔ ✖
  • B 145% ✔ ✖
  • C 150% ✔ ✖
  • D none of these ✔ ✖
Correct Answer

Explanation


We can define a variable "z" as the net percent change in area and 
set up the following equation:

z = (x + y + xy/100)%
= (55 + 55 + (55 * 55)/100)%
= 140.25%

This equation shows that the net percent change in area is 140.25%.
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