Harish drive to his office at 20km/hr. After reaching office, he realize that today is a holiday of 'Labor Day'.He went back at average speed of 30km/hr. Discounting the time spent in the stoppage what was his average speed of his journey ?
a) 23km
b) 24km
c) 25km
d) 30km
e) none of these

• 2*20*30 / (20 + 30) = 24 kmph
• 11 years agoHelpfull: Yes(0) No(1)