A rectangle has width a and length b. If the width is decreased by 20% and the lengt
is increased by 10%, then what is the area of the new rectangle in percentage compared
to 'ab'?
(R.R.B. 2009
(a) 80%
(b) 88%
(c) 110%
(d) 120%
Answers
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0
Answer:
B
Step-by-step explanation:
width = a, length = b
Initial area = axb
new width = ax(80/100) reduced by 20%
new length = bx(110/100) increased by 10%
new area = (8ax11b)/100 = 88% of ab
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