The length of a rectangle is decrease...

The length of a rectangle is decreased by `r %` , and the breadth is increased by `(r+5)%` . Find `r` , if the area of the rectangle is unaltered. (a) 5 (b) 8 (c) 10 (d) 15 (e) 20

Text Solution

AI Generated Solution

Topper's Solved these Questions

ALLIGATION OR MIXTURE
RS AGGARWAL|Exercise All Questions|31 Videos
AVERAGE
RS AGGARWAL|Exercise All Questions|203 Videos

Similar Questions

Explore conceptually related problems

The length of a rectangle is decreased by 10% and its breadth is increased by 10%. By what percent is its area changed ?

If the length of a rectangle is increased by 12% and the width decreased by 15% , the area

The length of a rectangle is increased by 10% and the breadth is increased by 25%. What is the percentage change in its area?

If the length of a reactangle is increased by 20 % and breadth is decreased by 10 % find the net % change in the area of that reactangle .

If the length of a rectangle is increased by 40%, and the breadth is decreased by 20%. then the area of the rectangle increases by x%. Then the value of x is:

The length of a rectangle is increased by 10% and breadth is decreased by 10%. Then the area of the new rectangle is

If the length of a rectangle is increased by 50%, and the breadth is decreased by 30%, then the area of the rectangle increases by x%. Then the value of x is:

If length of a rectangle is increased by 10% and breadth is increased by 15%, then what will be the percentage increase in the area of rectangle ?

RS AGGARWAL-AREA-All Questions

A towel, when bleached, was found to have lost 20% of its length an...
Text Solution
|
The length of a rectangle is halved, while its breadth is tripled. ...
Text Solution
|
The length of a rectangle is decreased by r % , and the breadth ...
Text Solution
|
The length of a rectangle is increased by 30%. By what percent would t...
Text Solution
|
If the area of a rectangular plot increases by 30% while its breadt...
Text Solution
|
If the breadth of a rectangle is decreased by 50%, then to double t...
Text Solution
|
If the length and breadth of a rectangular field are increased, the...
Text Solution
|
The length of a rectangle is reduced by 20% and breadth is kept con...
Text Solution
|
A typist uses a paper 30 cm by 15 cm. He leaves a margin of 2.5 cm ...
Text Solution
|
A room 5mxx8m is to be carpeted leaving a margin of 10 cm from each...
Text Solution
|
A lawn is in the shape of a rectangle of 80 m length and 50m width....
Text Solution
|
The breadth of a rectangular field is 3/4 of its length and its ...
Text Solution
|
What will be the cost of gardening 1 metre broad boundary around a ...
Text Solution
|
2 metres broad pathway is to be constructed around a rectangular pl...
Text Solution
|
A path of uniform width runs round the inside of a rectangular fiel...
Text Solution
|
Within a rectangular garden 10 m wide and 20 m long, we with to pav...
Text Solution
|
A rectangular garden (60 mxx40 m) is surrounded by a road of wid...
Text Solution
|
A rectangle lawn 80 m xx 60 m has two roads each with 10 m wide runnin...
Text Solution
|
A rectangular field has dimensions 25m by 15m. Two mutually perpend...
Text Solution
|
A rectangular park 60 m long and 40 m wide has two concrete crossro...
Text Solution
|