1.

1) A boat travel 16km upstream & 24km downstream in 6 hours andsame boat travels 36km upstream & 48km downstream in13hours. Find the speed of water current and speed of boat instill water.​

Answer»

ed of the boat in still water =x km/hr, andSpeed of the CURRENT =y km/hrDownstream speed =(x+y) km/hrUpstream speed =(x−y) km/hrT= SD x+y24 + x−y16 =6 .......(1)x+y36 + x−y12 =6 .......(2)Put x+y1 =u and x−y1 =v the above equation becomes,24u+16v=6Or, 12u+8v=3 ... (3)36u+12v=6Or, 6u+2v=1 ... (4)Multiplying (4) by 4, we get,24u+8v=4v … (5)SUBTRACTING (3) by (5), we get,12u=1⇒u= 121 Putting the value of u in (4), we get, v= 41 ⇒ x+y1 = 121 and x−y1 = 41 ⇒x+y=12 and x−y=4Thus, speed of the boat upstream =4 km/hrSpeed of the boat downstream =12 km/hrStep-by-step explanation:plz mark as brainlist



Discussion

No Comment Found

Related InterviewSolutions