If Michael can swim downstream at 6kmph and upstream at 2kmph. What is his speed in still water?

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06 Apr 2020 Swim

If Michael can swim downstream at 6kmph and upstream at 2kmph.
What is his
speed in still water?
Round decimals to the nearest hundredths.

OPtion

1) 8.00mps
2) 4.00mps
3) 2.00mps
4) 6.00mps
5) 5.00mps
6) 7.00mps
7) 10.00mps
8) 1.11mps
9) 12mps
10) None of these

Solution

Let speed of Micahel be M kmph
and stream be S kmph
M+S = 6kmph
M-S = 2kmph

Solving we get 2M = 8 kmph
=> M = 4kmph = 4*5/18 mps = 1.111111mps

Correct Option: 8 Best Solution (3)