Question

The length of a rectangle is 8 cm more than its breadth. If its length is increased by 7 cm and breadth is decreased by 4 cm, then its net fruit remains unchanged. What is the length and breadth of the rectangle?

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Answer 1

As length is increased by 10% and breadth is decreased by 10%Then new area will be=110%l×90%×b=99%lbSo,% change=100%−99%=1%❤️