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The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:

A. 40% B. 42%
C. 44% D. 46%

Read Solution (Total 2)

Option c 44%
Now length and breadth becomes 1.2 times of original
Area=1.44
Change in area=1.44-1/1*100=44%
12 years agoHelpfull: Yes(3) No(2)

req percentage= 20% -(-20%) - (20%) x(-20%)
= 44%
this is purely correct
11 years agoHelpfull: Yes(2) No(2)

CSC Other Question

An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:

A. 2% B. 2.02%
C. 4% D. 4.04% A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is:

A. 10% B. 10.08%
C. 20% D. 28%