Question

A rectangle has dimensions 40 mx 25 m.
if the length and breadth are increased by
15%find the%increasein it's area
​

Answer 1

Answer:

Step-by-step explanation:

Let the numbers be x and y:

Given, (x+8)(y+3)=200+xy ....(1)

and (x+3)(y+8)=255+xy ....(2)

Simplifying the 2 equations, we get

3x+8y=176

3y+8x=231

x=  

3

(−8y+176)

​  

 

Substituting this value of x in any equation, we get  

3y+8  

3

(−8y+176)

​  

=231

Thus, x=24 and y=13.

Therefore, length is 24 m and breadth =13 m.