If the side of a square is increased by 25% then its area is increase

Question

If the side of a square is increased by 25% then its area is increased by:

(A) 25% 
(B) 40.5% 
(C) 55%
(D) 56.25%
(E) 60%

ShahadatHJ · Answer

25+25+  \frac{25*25}{100}

MBAHOUSE · Answer

TECHINIQUE of plug in numbers

ThatDudeKnows · Answer

Original square: 4x4. Area = 16.
Larger square: 5x5. Area = 25.

9/16 = 1/2 + 1/16
1/16 = half of 1/8, so half of 12.5% = 6.25%
56.25%

Answer choice D.

ThatDudeKnowsPluggingIn

MBAHOUSE · Answer

Very good explanation. I would add;

x100 = (9/16) x 100 = 56.25%

Percent change =   x 100

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