Time taken by A to complete the work = 32 days Time taken by B to complete to the work = 32 – 12 = 20 days Time taken by C to complete the work = 12/0.25 = 48 days Let the total work = 480 units Efficiency of A = 480/32 = 15 units/day Efficiency of B = 480/20 = 24 units/day Efficiency of C = 480/48 = 10 units/day Therefore, 1 days work of (A + B + C) = 15 + 24 + 10 = 49 units Therefore, required time taken = 0.6125 × 480/49 = 6 days
Quantity I: A vessel contains a mixture of milk and water in the ratio of 7 : 5. If 9 litre of mixture is sold and replaced by same amount of water then...
I. x2 - 5x - 14 = 0
II. y2 - 16y + 64 = 0
I. 96x² + 52x - 63 = 0
II. 77y² + 155y + 72 = 0
I.8(x+3) + 8(-x) =72
II. 5(y + 5) + 5(-y) = 150
I. 4x² - 21x + 20 = 0
II. 8y² - 22y + 15 = 0
I. 3x2 – 17x + 10 = 0
II. y2 – 17y + 52 = 0
I. 2x2 – 19x + 45 = 0
II. y2 – 14y + 48 = 0
Roots of the quadratic equation 2x2 + x – 528 = 0 is
I. 2y2 - 15y + 18 = 0
II. 2x2 + 9x - 18 = 0
I. 2x² - 15x + 13 = 0
II. 3y² - 6y + 3 = 0