Boat Q travels 288 kry in upstream in 24hrs . The speed of another boat P in still water is 50% of the speed of boat Q in downstream and the speed of stream for both boat P and Q is same i.e. 12 km/hr. Find the distance travelled by boat Pin downstream in 15 hours.
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Step-by-step explanation:
Let the speed of boat in still water and the speed of the river be B km/hr and R km/hr respectively, then
... (i)
(2 hours 24 minutes = 2.4 hours)
According to question
(R – B) : (R + B) = 2 : 3
⇒ 12 : (R + B) = 2 : 3
⇒ (R + B) = 18 ... (ii)
On solving equations (i) and (ii), we get
R = 15
Hence, the speed of boat in still water = 15 km/hr.
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