शांत जल में नाव की चाल 20km/h है तथा धारा की दिशा में 25km/h है तो धारा के विपरीत नाव को 60km जाने में कितना समय लगेगा
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IN STANDING WATER SHIP'S SPEED IS 20KM/H. AND IN THE DIRECTION OF RIVER IT IS 25KM/H. SO THE SPEED OF THE WATER IN RIVER IS 5KM/H. TO GO 60KM IN OPPOSITE DIRECTION OF RIVER THE TIME QUIRED IS 60/(20-5)=4HRS
Premkushwaha:
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