Train A is 180 meters long, while another Train B is 240 meter long. Train A has a speed of 30 kmph and Train B’s speed is 40 kmph, if the trains move in opposite directions, then in what time will Train A pass Train B completely?
Total distance = 180 + 240 = 420 meter Relative speed = (30 + 40)×5/18 = 350/18 m/s Required time = (420×18)/ (70×5) = 21.6 sec
I. 2y2- 37y + 143 = 0
II. 2x2+ 15x – 143 = 0
I.8(x+3)+ 8(-x)=72
II. 5(y+5)+ 5(-x)=150
I. x2 – 13x + 40 = 0
II. 2y2 – 15y + 13 = 0
I. (2x-3)3+ 1/((2x-3)³)=2
II. 4y²+(y+8)^2= 157
I. 17x² - 26x – 16 = 0
II. 17y²- 26y + 9 = 0
I. 20y² - 13y + 2 = 0
II. 6x² - 25x + 14 = 0
I. 6x2 + 23x + 10 = 0
II. 2y2 - 3y - 5 = 0
I. 3x2 – 16x + 21 = 0
II. y2 – 13y + 42 = 0
I. 2y2 + 31y + 99 = 0
II. 4x2 + 8x – 45 = 0
I. 2x2– 5x – 63 = 0
II. 2y2– 7y – 72 = 0
