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 ..

Answer / zammil

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 ?    37 Yes 2 No

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

Answer / guest

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 ..

Answer / asdf

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 ..

Answer / meenakshy

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

Post New Answer



More General Aptitude Interview Questions

There is a carem board where 4 No of player can play at a time but 5 No of player have to play with every for gain personal score(not double).In this case how many total minimum No of game /meach will be play..

1 Answers  


Whether from one system to another we are able to share the Data? Whether Antivirus helps the system to keep it safe from Virus? Why you consider yourself suitable for this post? Why you want to join in this company? And what made you to apply for this job? State with Reason What you think is best for your department? A)Strict Discipline B)Family Atmosphere C)Work as Team in Department Are you to relocate yourself to any site or Office as required by Company?

0 Answers   Innodata,


How much area in sqmt of 14 fit dia cirlce???

6 Answers   IBM,


a laborer can dig a hole 8feet squatre and 8 feet deep in 8 days.how long will it take him ti dig a hole 4 feet square and 4 feet deep?

6 Answers   TCS,


Hi fnds.. I am doing Finar MCA ... I want US TECHNOLOGY RECENT Palcement paper.Can any one help me. velusamy.s@kgisliim.ac.in plz send to this mail id...

0 Answers  






a dog takes 4 leaps for every 5 leaps of a hare but 3 leaps of a dog are equal to 4 leaps of the hare .compare their speeds(.......... please give explanation....)

13 Answers   SSC, Syntel, Infosys, College School Exams Tests,


If it costs x dollors for making certain item if quantity is 1000 and if quantity increase then the item is made using y dollars. If z number of items are made which are greater than 1000 then what is the total cost.

6 Answers   Samsung, College School Exams Tests,


In 3.5 Kg rod , there is 74% silver. If it is alloyed with a 0.5 Kg rod, the % of silver goes p to 84%. The percent of silver in 0.5 Kg rod?

3 Answers   Mascot,


If the produtof the consecutive integers is equal to one of them what is the largest possible value of one of the integers

3 Answers  


A person with some money spends 1/3 for cloths, 1/5 of the remaining for food and 1/4 of the remaining for travel. He is left with Rs 100/- How much did he have with him in the begining?

2 Answers   ICICI, Infosys,


Three boxes 1,2,3 contain values 3,17,34. Get 40 in box 1 in 3 steps.

9 Answers   Godrej, HyperCity,


If x + 8y = 20 and x = -3y, then y =

10 Answers   IBM,






Categories