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ATQ,
Let, speed of boat in still water and stream speed be B km/hour and s km/hour, respectively.
So, (B + s) = 24 … (i)
Also, (B – s) = 16 … (ii)
Solving equation (i), and (ii), we get,
B = 20 km/hour
s = 4 km/hour
According to question,
(x + y)/(B – 2s) = 12
(x + y) = 12 × (20 – 2 × 4) = 12 × 12 = 144 km
Therefore, average value of x and y = (x + y)/2 = 144/2 = 72 km
l. 3x2 + 17x + 24 = 0
II. 2y2 + 15y + 27 = 0
I. 5x + 2y = 31
II. 3x + 7y = 36
I. 2x2– 5x – 12 = 0
II. 2y2+ 13y + 20 = 0
i) p2+p=56
II) q2-17q+72=0
...I. 8y2- 2y - 21 = 0
II. 2x2+ x - 6 = 0
I. x2 – 13x + 36 = 0
II. 3y2 – 29y + 18 = 0
I. 4x² - 21 x + 20 = 0
II. 8y² - 22 y + 15 = 0
I. x2 – 10x + 21 = 0
II. y2 + 11y + 28 = 0
I. x² + 11x + 24 = 0
II. y² + 17y + 72 = 0
In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answer
I. x2 – ...