Plxxxxx see image.....m explain que 17........plxxx ans fast
Plxxxxx see image.....m explain que 17........plxxx ans fast
Tanisha , 6 Years ago
Grade 11
Mechanics> Plxxxxx see image.....m explain que 17......
1 Answers
Arun
Dear Tanisha
Let speed of stream be v and speed of motorboat be u.
Now distance moved by boat in 1 hour=(u+v)*1=u+v
total time is=6/v
speed of boat when it turns back=u-v
=>u+v-6=(u-v)(6/v -1)
solving for v we get, v=3 km/hr [Ans]
Regards,
Now distance moved by boat in 1 hour=(u+v)*1=u+v
total time is=6/v
speed of boat when it turns back=u-v
=>u+v-6=(u-v)(6/v -1)
solving for v we get, v=3 km/hr [Ans]
Regards,
Approved Last Activity: 6 Years ago
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