Question

The length of a rectangle exceeds its breadth by 7cm. if the length is decreased by 4 cm and the breadth is increased by 3 cm, the area of the new rectangle is the same as the area of the original rectangle . find the length and the breadth of the original rectangle.

Answer 1

Let length be L and breadth be B
Given, L = B+7 -----(1)

Also, LB = (L-4)(B+3)
LB = LB + 3L - 4B - 12
3L - 4B = 12
Substituting from (1)
3(B+7) - 4B = 12
B = 9 cm
From (1), L = 9+7 = 16 cm

Answer 2

Answer:

Step-by-step explanation:

net length BL and breadth be be given l equal to b + 7 also I'll be equal to m - 4 b + 3 lb equal to 3 + 3 - 4 - 12 3 and - 4 is equal to 12 separating from 13 + 74 - 4 is equal to 12 b is equal to 9 cm from 1l equal to 9 + 7 equal to 16 cm