The difference between the value of the number increased by 20% and the value of the number decreased by 30% is 120. Find the number.
Let the number be x According to the question x × 120/100- x × 70/100=120 120x - 70x = 12000 50x = 12000 x = 240
I. 12y2 + 11y – 15 = 0
II. 8x2 – 6x – 5 = 0
I. 8x² + 2x – 3 = 0
II. 6y² + 11y + 4 = 0
I. 2p2 + 25p – 13 = 0
II. 2q2 – 19q = 2q + 23
I. 2 x ² + x – 1 = 0
II. 2 y ² - 3 y + 1 = 0
...I. 8y2- 2y - 21 = 0
II. 2x2+ x - 6 = 0
I. 8x² - 74x + 165 = 0
II. 15y² - 38y + 24 = 0
I. 4x2+ 25x + 36 =0
II. 2y2+ 5y + 3 = 0
I. 2b2 + 31b + 99 = 0
II. 4a2 + 8a - 45 = 0
I. 2x² - 15x + 13 = 0
II. 3y² - 6y + 3 = 0
I. 3p² - 14p + 15 = 0
II. 15q² - 34q + 15 = 0