Question

A bus covers a distance of 240 km at a uniform speed.Due to heavy rain its speed gets reduced by 10 km per hour and as such it takes 2 hours longer to cover the total distance.assuming the uniform speed to be 'x' kilometre per hour form an equation and solve it to evaluate x.
plz answer correctly n ASAP

Answer 1

then let the speed of the bus be x km/h. then time taken by the bus for the first=240/x hrs.
 and time taken by the bus after raining to cover the distance=240/x-10
.by the question we have, (240/x-10)-(240/x)=2hrs
.=>2400=2x(x-10)=>
2x²-20x-2400=0=>
x²-10x-1200=0=>
x²-(40-30)x-1200=0=>x(x-40)+30(x-40)=0=>x=40km/h.
hence the speed of the bus=40km/h.

Answer 2

so here is the answer

hope this helps you