Question

$\huge\bold{\textbf{\textsf{{\color{cyan}{Question}}}}}$

ᴇʟᴇɢᴀɴᴛ ʙᴏʏ

the area of a rectangle producers by 160 metre square if its length is increased by 5 M and breadth is reduced by for four metre. however if length is decreased by 10 M and breadth is increased by 2 m then its area is increased by hundred metre square find the dimensions of the rectangle.​

Answer 1

Step-by-step explanation:

lb−(l+5)(b−4)=160.

4l−5b=140...1

lb−(l−10)(b+2)=100

10b−2l=140....2

Put l=5b−70 in 1

20b−280−5b=140

15b=420

b=28m

l=70m

Length of rectangle =70m

Breath of rectangle =28m

Hope it helps you

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Answer 2

Answer:

lb−(l+5)(b−4)=160.

4l−5b=140...1

lb−(l−10)(b+2)=100

10b−2l=140....2

Put l=5b−70 in 1

20b−280−5b=140

15b=420

b=28m

l=70m

Length of rectangle =70m

Breath of rectangle =28m

Hope it helps

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