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Numerical Ability
Time Distance and Speed
A motorist travels to a place 150 km away at an average speed of 50 km per hour and returns at 30 km per hour. His average speed for the whole journey in km per hour is :
a. 35
b. 37
c. 37.5
d. 40
Read Solution (Total 1)
-
- avg speed= 2xy/x+y
2*50*30/80
ans:c.37.5 - 11 years agoHelpfull: Yes(1) No(0)
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