Question
A boat racer can row 45/2km/h in still water. If the
speed of river is 12.5 km/h, it takes him 40 minutes to row to a place and back, how far off is the place (consider up to two decimals)?Solution
Speed of boat in still water =B=45/2 =22.5km/h Speed of river (Stream)=S =12.5km/h Speed of boat in upstream =22.5-12.5=10km/h Speed of boat in Downstream=22.5+12.5=35km/h Let the distance =D ATQ- 
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I. ...
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Some mats are bedsheets.
All bedsheets are chairs.
Some chairs are desks.
Conclusions:Â Â Â Â Â Â Â Â
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