- A3.5
- B6
- C4.4
- D3
Step-by-Step Solution
With the current the speed is 19 + 5 = 24 km/h, so the time is 84 ÷ 24 = 3.5 hours. (6 hours would be against the current.)
Answer: A) 3.5
A launch has a still-water speed of 19 km/h and the river current is 5 km/h. Find the time it needs for an 84 km trip with the current, in hours.
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