- A90 km
- B60 km
- C72 km
- D108 km
Step-by-Step Solution
and ⇒ ⇒ km. (Downstream 15 km/h fits the 6-hour trip ✓.)
Answer: A) 90 km
A launch takes 9 hours to go up a stretch and 6 hours to come down it. If its speed in still water were 2 km/h higher, the trip up would take 7.5 hours. How long is the stretch?
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