In a total 80-liter mixture of milk and water, there is

I. 8a² – 22a+ 15 = 0

II. 12b² - 47b + 40=0

I. 2x² – 5x – 12 = 0

II. 2y² + 13y + 20 = 0

For 3x² − 10x − 8 = 0, find (1/α + 1/β).

I. x² - 9x - 52 = 0

II. y² - 16y + 63 = 0

I. 10x² + 33x + 9 = 0

II. 2y² + 13y + 21 = 0

I. 3x² - 16x - 12 = 0

II. 2y² + 11y + 9 = 0

I. 2y² - 11 y + 15 = 0

II. 2x² + 3x – 14 = 0

I). 5p²  - p - 4 = 0

II). q² - 12q + 27 = 0

If the roots of the quadratic equation 5x² + 4x + 6 = 0 are α and β, then what is the value of [(1/α) + (1/β)]?

I. y/16 = 4/y 

II. x³ = (2 ÷ 50) × (2500 ÷ 50) × 4² × (192 ÷ 12)