The difference of time, when a boat travels 100 km downstream and 80 k – McqOptions

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1.	The difference of time, when a boat travels 100 km downstream and 80 km downstream is 1 hour. The speed of the stream is 1.5 km/h. Find the speed of the boat in upstream.
A.	12 km/h
B.	17 km/h
C.	24 km/h
D.	18.5 km/h
E.	20 km/h
Answer» C. 24 km/h

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