Question

if the length of rectangle decresed by 2metres and breadth incresed by 2metres then area would increse by 8 square metre. if the length is decreased by 3metres and breadth is decreased by 1metre then area would decreased by 27sq metre what is length and breadth​

Answer 1

Answer:

a=10

Step-by-step explanation:

Let length be

′

a

′

m

breadth be

′

b

′

m

area

′

ab

′

m

2

(a+5)(b−3)=ab−5

⇒ab+5b−3a−15=ab−5

⇒5b−3a=10−(1)

(a+3)(b+2)=ab+50

⇒ab+6+3b+2a=ab+50

⇒3b+2a=144−(2)

solving equation (1) and (2)

19b=152

⇒b=

19

152

=8

5×8−3a=10⇒3a=40−10=30

⇒3a=30⇒a=10

Answer 2

Answer:

here is your answer.....

hope it helps ☺️......