Rectangle area

The length of a rectangle is x units, and the width is y. Dimensions are increased by 10% and 15%, respectively. What is the ratio of the areas of the old and new rectangle?

Correct answer:

r =  1.265
p =  26.5 %

Step-by-step explanation:

a2 = 1.10 a1 b2 = 1.15 b1 S1 = a1   b1 S2 = a2 b2 = 1.10 a1   1.15 b1 S2 = 1.10   1.15   S1 r=1.10 1.15=1.265
p=100 (r1)=100 (1.2651)=26.5%



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