A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downstream in $$6{1\over 2}$$ hours. The speed of the current is:
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Q:
A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downstream in $$6{1\over 2}$$ hours. The speed of the current is:
- 11.5 km/ hrfalse
- 22.5 km/ hrfalse
- 31 km/ hrfalse
- 42 km/ hrtrue
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