Find the simple interest (in ₹) on ₹2500 as a sum

I. 2y² + 11y + 15 = 0

II. 3x² + 4x - 4= 0

I. x² – 12x + 32 = 0

II. y² + y - 20 = 0

I. 12x² + 22x + 8 = 0

II. 4y² - y − 3 = 0

I. (x^13/5 ÷7) = 5488 ÷ x^7/5

I. 7x² + 27x + 18 = 0

II. 19y² - 27y + 8 = 0

Solve the quadratic equations and determine the relation between x and y:

Equation 1: x² - 26x + 168 = 0

Equation 2: y² - 23y + 132 = 0

I. 27x² + 120x + 77 = 0

II. 56y² + 117y + 36 = 0

If x and y satisfy x² + y² = 25 and x + y = 7, find xy.

I. 3x² – 16x + 21 = 0

II. y² – 13y + 42 = 0

Solve the quadratic equations and determine the relation between x and y:

Equation 1: 19x² - 92x + 73 = 0

Equation 2: 17y² - 76y + 59 = 0