 
<translate> Saurin saukar da ruwa = 40 + 20 = 60 kmph Saurin hawan sama = 40 - 20 = 20 kmph Saboda haka, amsar ita ce (E). <eng> Speed downstream = 40 + 20 = 60 kmph
Speed upstream = 40 - 20 = 20 kmph
Therefore, the answer is (E). 