Question

please tell the answers plz I need it right now ​

Answer 1

Answer:

Let the uniform velocity of the second the train be x km/hour. <br>

:.

the time taken by the second station is

(300)/(x)

hours. If the uniform velform velocity of the train had been 5 km/ hour more, the time taken by the train to reach the second station is

(300)/(x+5)

hours. <br> As per question,

(300)/(x)-(300)/(x+5)=2

<br> or,

(150)/(x)-(150)/(x+5)=1or,(150x+750-150)/(x(x+5))=1

<br> or,

(750)/(x^(2)+5 x)=1or,x^(2)+5x=750

<br> or,

x^(2)+5x-750=0

. <br> Hence the required quadartic equation is

x^(2)+5x-750=0