15. The length of a rectangle is increased by 12% and
its breadth is decreased by 20 %. What is the
percent change in the area of the rectangle?
(1) 16.8% increase (2) 10.4% decrease
(3) 5.6% increase (4) 0.5% decrease
(5) None of these
Answers
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1
Answer:
10.4%
Step-by-step explanation:
Length =l; breadth=b
Area of rectangle= l×b
New length = 28l/25
" breadth= 4b/5
" area. = 112lb/125
% increase. = 10.4% (ans.)
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