If the length and width of a rectangular garden were each increased by 20 then what would be the per...........

Quantitative Aptitude ( CCS) Mensuration 2D

If the length and width of a rectangular garden were each increased by 20%, then what would be the percent increase in the area of the garden?

20%

24%

36%

44%

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Explanation:

We can let the original length = 10 and the original width = 10.

We see that the increased length will be 12, and the increased width will be 12.
The original area is length x width = 10 x 10 = 100. The new area is 12 x 12 = 144.
We find the percentage increase in the area by using the formula (new - old)/old x 100, and we obtain:
(144 - 100)/100 x 100 = 44/100 x 100 = 44%.

Hence, option 4 is the correct answer.