Subject
Quantitative Aptitude
Topic
Areas & Volumes
If the length of a rectangle is increased by 20% and width is decreased by 20% what is the change in area of the rectangle?
If the length of a rectangle is increased by 20% and width is decreased by 20% what is the change in area of the rectangle?
ক)
unchangedখ)
decreases by 4%গ)
increases by 4%ঘ)
increases by 5%Explanation
গড় পরিবর্তন = A + B + (A x B)÷100 = 20 + (-20) + (20 x (-20))÷100 = -4%Related questions
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