Question

Train covered a certain distance at uniform speed. If the train had been 6 km/h faster, then have taken 8 hours less than the scheduled time. And, if the train were slower by 6 km/h, then the would have taken 12 hours more than the scheduled time . 140 % of the length of journey is

Answer 1

Answer:

Step-by-step explanation:

take square both sides

(ax+by)^2 = xy

ax^2+by^2+2axby = xy

now 2axby is constant so we can neglect it

hence prove