Answer :

Given: Ratio of sides of rectangle = 4: 5

Let the sides of rectangle be 4x and 5x

i. By what fraction should the shorter side be increased to make it a square

Shorter side = 4x

To make it a square, 4x should be increased to make it as 5x by n%.

⇒ 4x + 4x × n% = 5x

⇒ 4x × n% = 5x - 4x

⇒ 4x × n% =x

⇒ n%

∴ Shorter side should be increased by

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