Let daughters age = x years And let son’s age = y years ∴ Father’s age = 4x years Mother’s age = 3 y years ∴ 4x – 3y = 12 -------- (1) y – x = 6 -------------- (2) By solving both the equations 1 and 2, we get y = 36 By putting value of in equation (2) we will get sister’s age ∴ Sister’s age = 36 - x = 6 ∴ x = 30 years
I. x − √2401 = 0
II. y2 − 2401 = 0
I. 117x² + 250x + 117 = 0
II. 54y² -123y + 65 = 0
I. 8x2- 2x – 15 = 0
II. 12y2- 17y – 40 = 0
Quantity I: The price of rice is decreased by 30%, by how much % the consumption is increase so that the expenditure will decreased by 10%?
Quant...
I. 2x2- 15x + 25 = 0
II. 3y2- 10y + 8 = 0
One of the roots of equation bp2 — (9b+3)p + 64 = 0 is 8, Determine the others root.
I. 2y2– 19y + 35 = 0
II. 4x2– 16x + 15 = 0
I. (y – 5)2 – 9 = 0
II. x2 – 3x + 2 = 0
I: x2 + 31x + 228 = 0
II: y2 + 3y – 108 = 0
I. 6 y² + 11 y – 7= 0
II. 21 x² + 5 x – 6 = 0