Question

A car completes a journey in 400 km in 12.30 hr the 3/4 part was covered by 30 km/hr what is the speed of the rest of the journey

Answer 1

Answer:

30 km/h (approx.)

Step-by-step explanation:

total distance =400 km

total time=12 hr 30 min or 750 min

3/4 distance= 30 km/h

speed while this(60 km)=30km/hr

let time taken while this='x' hr

Now, according to formula:

30=60/x

x=2 hr or 120 min

rest journey= 400-60=340 km

rest time=750-60=690 min or 11 h 5 mins

So, speed=340/11.5=30 km/h (approx.)

-----------------------------------------------------------------------------------

i hope it will helps you