mphasis Company Numerical Ability Data Sufficiency

{ log (.2^1) / log ( 2^2 )} *log10 ==?

0
1
-2
-1
not

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mphasis Other Question

2 hours after a freight train leaves Delhi a passenger train leaves the same station traveling in the same direction at an average speed of 16 km/hr. After traveling 4 hrs the passenger train overtakes the freight train. The average speed of the freight train was?

A. 30
B. 40
C.58
D. 60