Question

plzzz solve with full process
question 9$10

Answer 1

Let the distance is x km

Rate downstream = 5 + 1 = 6 kmph

Rate upstream = 5 - 1 = 4 kmph

then  

x/6 + x/4 = 1 [because distance/speed = time]

=> 2x + 3x = 12  

=> x = 12/5 = 2.4 km

Answer 2

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