Question

BRILLIANT PLZ ANSWER

3rd QUESTION

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Answer 1

the question is just like this one

Answer 2

To find:-
The dimensions of the rectangle

SOLUTION:-

Let:- Length=1unit
Breadth=b units

And Area=1×b units

1 case:-( when length increased by 5 units and breadth decreased by 3 units)

Area = Length × Breadth
======>(lb-25)=(l+5)(b-3)
======>lb-25=lb-3l+5b-15
======>3l-5b=10---(i)

2nd case:- (when length increased by 2 units and breadth increased by 5 units)

Area= length × breadth
======>lb+285= (l+2)(b+5)
======>lb+285=lb+5l+2b+10
=====>5l+2b=275-----(ii)

FROM (i) we get

l= 5b+10/3

NOW subtituting 1 value in i
we get
5(5b+10/3)2b=273
25b+50+6b=825
31b=775
b=25

l=5(25)+10/3=135/3=45 units

l=45