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If the length of a rectangle is halved and its breadth is tripled, what is the percentage change in its area?

A. 25 % Increase

B. 25 % Decrease

C. 50 % Decrease

D. 50 % Increase

Amit Saxena , 11 Years ago
Grade upto college level
anser 3 Answers
Karasala Ashokchowdary

Last Activity: 11 Years ago

c

50% it will Decrease.

Hrishant Goswami

Last Activity: 11 Years ago

Answer : Option D

Explanation :

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Solution 1
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Let original length = 100 and original breadth = 100
Then original area = 100 × 100 = 10000

Length of the rectangle is halvedNew length = Original length2=1002=50breadth is tripledNew breadth= Original breadth×3=100×3=300

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Khandavalli Satya Srikanth

Last Activity: 11 Years ago

Initial area AI=lb (l=length,b=breadth)

Area after dimensions are changed Af=(l/2)(3*b)=1.5lb

percentage change=((Af-Ai)/Ai)*100=(1.5-1)/1=50% increases

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