a boat moves with a speed 5km/h relative to water flowing with a speed of 3km/h and having a width of 1km.The minimum time taken around a round trip by the boat
is
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For the round trip he should cross perpendicular to the river
∴
Time for trip to that side
=
1km
4km/hr
=0.25hr
To come back, again he take 0.25 hr to cross the river. Total time is 30 min, he goes to the other bank and come back at the same point.
For the round trip he should cross perpendicular to the river
∴
Time for trip to that side
=
1km
4km/hr
=0.25hr
To come back, again he take 0.25 hr to cross the river. Total time is 30 min, he goes to the other bank and come back at the same point.
∴
Time for trip to that side
=
1km
4km/hr
=0.25hr
To come back, again he take 0.25 hr to cross the river. Total time is 30 min, he goes to the other bank and come back at the same point.
For the round trip he should cross perpendicular to the river
∴
Time for trip to that side
=
1km
4km/hr
=0.25hr
To come back, again he take 0.25 hr to cross the river. Total time is 30 min, he goes to the other bank and come back at the same point.
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