Question

speed of a vehicle 50 km per hour in a particular part of street.of a particular day average speed is less then one tenth of his usual speed the time taken 18 minute less.how long the part of street?​

Answer 1

Answer:

Impossible to answer. If the “average speed” in one hour make the car travel 50km, it means the speed could not be constant. So, it could be 90km/h during the first 30 minutes and 10km/h during the second 30 minutes. If this is the case, for example, in the next 12 minutes after the first hour, the car could be traveled 18km at 90km/h, completing 50 + 18 = 68km. The tricky word “average” makes it impossible to answer. Good try, but no cigar.