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
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 ? | 38 Yes | 2 No |
Answer / guest
Decreased by 4%
Refer GMAT'96 edition ..i think page 44
Is This Answer Correct ? | 36 Yes | 3 No |
Answer / asdf
it is dec by 4%
120% * 80% = 96%
ie dec by 4... sure now??
Is This Answer Correct ? | 17 Yes | 2 No |
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 |
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 |
what is your approach to working under pressure?
A person has to cover the fixed distance through his horses. There are five horses in the cart. They ran at the full potential for the 24 hours continuously at constant speed and then two of the horses ran away to some other direction. So he reached the destination 48 hours behind the schedule. If the five horses would have run 50 miles more, then the person would have been only 24 hours late. Find the distance of the destination.
distance D=rt where r & t are +ve and r is constant,as t increses then D_________
?School? is related to ?Education? in the same way as ?Hospital? is related to (a) Treatment (b) Patient (c) Doctor (d) Nurse (e) None of these
A store owner decided to raise the price of a particular item by exactly 10%. Of the following which is NOT the new price? A)$1.10 B)$8.80 C)$11.00 D)$57.30 E)$78.10
if clouds are air, air are water and so on where birds fly?
19 Answers Cognizant, Patni, Vision Infotech,
There are two glasses A and B. A contains orange juice and B contains apple juice in same quantity. Some amount orange juice from glass A is transferred to glass B. The juice in glass B is mixed well. Then again the same amount of juice from B is transferred to A. Compare the quantities of apple juice in A and orange juice in B.
Four of the following five are alike in a certain way and hence form a group. Which one of the following does not belong to that group? (a) 63 (b) 64 (c) 39 (d) 48 (e) 79
Jack & Jill went to the hill....In going to hill (upword Direction)...Jack went to the hill first nd waited for Jill for "x" hours.. Jack's speed was then twice of Jill.. In the down word direction Jill can go 3km in a hour, while Jack can go 1km in 1 hour.. Jill reach the ground 1st nd waited for Jack for "x" hours.. Total journey they traveled is 6 km.. Find the speed of Jack...
Two trains are traveling in 60 kmph on same trace, towards each other. When the distance between them is 18 km, a fly is going to start, flying between them in 80 kmph speed. Find the traveling path distance of the fly upto when it is going to crush by the 2 trains?
There are two natural numbers. A cube difference of the squares is a square difference of their cubes.These are the smallest possible numbers. what is the sum of these numbers?
in an cricket match the team has to score 8 runs from 3 balls,the crickets on the grease were at a:92;b:96,they must complete hundred in the match how?