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Let the work ‘A’ and ‘B’, can do in 1 day be ‘a’ units and ‘b’ units, respectively. Let they takes ‘p’ days to build the wall, together Therefore, Total work = (a + b) × p units …….. (1) According to the question, Time taken by ‘A’ to build the wall alone = 1.15p days Therefore, total work = 1.15p × a units….. (2) From equation (1) and (2), we get 20b/3 = a Therefore, total work to be done = (a + b) × p = (23bp)/3 units Time taken by 'B' to build the wall = 23bp/3b = 23p/3 days Therefore, required percentage = (23p/3 – p)/p} × 100 = 666.66% more time
I. 2y² - 3y – 14 = 0
II. 3x² - 7x + 4 = 0
If α, β are the roots of the equation x² – px + q = 0, then the value of α2+β2+2αβ isÂ
...What are the coordinates of the point which divides the line joining (-1, 7) and (4, 3) in the ratio 2:3?
I. x2 – 3(x + 5) = -11
II. y2 – 4(y + 2) = -2y
(i) 2x² – 9x + 10 = 0
(ii) 4y² – 12y + 9 = 0
I. 2x² + 11x + 12 = 0
II. 2y² + 19y + 45 = 0
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 17x² - 94x + 120 = 0
Equation 2: 13y² - 45y + 13...
I. p2 – 2p – 15 = 0
II. q2 + 4q – 12 = 0
In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answer Â
I. 3x² –7x + 4 = 0�...