Follow Our FB Page << CircleMedia.in >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...

if length of a rectangle is incr by 20% and width is decr by
20% then area

Answers were Sorted based on User's Feedback

if length of a rectangle is incr by 20% and width is decr by 20% then area ..

we know,
area=b*h
b gets increased by 20% i.e (b+0.20b)
h gets decreased by 20% i.e (h-0.20h)

rewriting the equation(area=b*h),

area=(b+0.20b)*(h-0.20h)
area=b(1+0.20)*h(1-0.20)
area=b(1.20)*h(0.80)
area=b*h*(1.20)*(0.80)
area=b*h*(0.96)

i.e new area=0.96 times the original area
if 100% was the original area,it has decreased to 96%
so,100%-96%= 4%

 Is This Answer Correct ? 38 Yes 2 No

if length of a rectangle is incr by 20% and width is decr by 20% then area ..

Decreased by 4%
Refer GMAT'96 edition ..i think page 44

 Is This Answer Correct ? 36 Yes 3 No

if length of a rectangle is incr by 20% and width is decr by 20% then area ..

it is dec by 4%

120% * 80% = 96%

ie dec by 4... sure now??

 Is This Answer Correct ? 17 Yes 2 No

if length of a rectangle is incr by 20% and width is decr by 20% then area ..

i think d area will be 24/25.
since l=120/100=>6/5
and b= 80/100=>4/5

 Is This Answer Correct ? 6 Yes 7 No

if length of a rectangle is incr by 20% and width is decr by 20% then area ..

Answer / amit kumar das

Increase by 1%

(Pls inform me if someone else with a different ans is v
sure)

 Is This Answer Correct ? 4 Yes 13 No

More General Aptitude Interview Questions

Plz send me GK question , current affairs..........

Three birds cross a point in a same st. line and of that 2 fly in opposite directions. If a triangle is formed with the position of the birds what kind of the triangle will be formed? a)isosceles b)right angle c)equilateral d)right angle and isosceles.

hi can any one send to me above question for ongc gt

if 36 x 45 + square root of a =1700 find a =?

one fast typist type some matter in 2hr and another slow typist type the same matter in 3hr. if both do combinely in how much time they will finish.

what is the difference between sports and games?

100 glasses are there. A servant has to supply glasses to a person If he supplies the glasses without any damage he will get 3 paise otherwise he will loose 3 paise. At the end of supplying 100 glasses if he gets 270 paise, how many glasses were supplied safely.

4. When 2 dice are simultaneously thrown, is it possible that one of the ____ occurs. Result 1: A 5 and a 6 are obtained. Result 2: A 5 is obtained twice. Select the response that you agree with the most.

In a certain company, 20% of the men and 40% of the women attended the annual company picnic. If 35% of all the employees are man, what percent of all the employees went to the picnic?

In the rectangle LMNO, the perpendicular bisector of LN divides the longer side LM in a ratio 2: 1. Then the angle between LN and MO is

what is the fullform of yes bank?

Which of these is true for the speed of an electro-magnetic wave and the speed of light?

Categories