1.

A rectangle whose length is 5 cm less than twice its breadth if the length is decreased by 5 cm a visit is increased by 2 cm the perimeter of the resulting rectangle will be 74 cm find the length and the width of the original rectangle

Answer»

Let width of rectangle be W

∴  length would be  L=2W−5

If the length is decreased by 5cm, then new L1=2W−10cm  

and width is increased by 2cm, new width W1=W+2cm 

Given, Perimeter =74cm

=>2(2W−10+W+2)=74

=>3W−8=37

=>3W=45

=>W=15cm

=>L=2W−5=2(15)−5=25cm



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