Question

ans it please .....i need it​

Answer 1

Answer:

length of original rectangle: 24m

breadth of original rectangle: 20m

Explanation:

Let the length of original rectangle be l

and breadth of the original rectangle be b.

so, according to the first statement given in the question,

(l + 6)(b -4) = l×b

lb - 4l +6b - 24 = lb

[lb cancels out]

- 4l +6b - 24 = 0

2l +3b - 12 = 0_________(1)

so, according to the first statement given in the question,

(l + 8)(b -5) = l×b

lb - 5l +8b - 40 = lb

[lb cancels out]

- 5l +8b - 40 = 0

5l -8b + 40 = 0_________(2)

By elimination method,

eq(1) × 5 - eq(2) × 2

10l - 15b +60 =0

10l - 16b +80 =0

(-) (+) (-)

______________

b -20 =0

b = 20.........putting in (1)

2l +3×20 - 12 = 0

l = 24