Question

6. A salesman travels a distance of 50 km in 2 hours and 30 minutes. How much faster, in kilometers per
hour, on an average, must he travel to make such a trip in 5/6 hour less time?​

Answer 1

Answer:

TIME REQUIRED

= (2 hrs _30 minutes _50 minutes)

= 1 hr 40 min.1 2/3 hrs.

therefore , required speed

=(50×3/5) km/hr

original speed =(50×2/5) km /hr

= 20 km / hr

therefore difference in speed = (30_20) km/ Hr =10 km / Hr