A boat takes 34 hours to travel from P to Q upstream and from Q to P downstream. If the speed of the boat in still water is 8.5 km/h and the speed of the current is 4.5 km/h, then P and Find the distance between Q.
Let the speed of boat in still water =B and speed of stream =S B=8.5km/h, S=4.5km/h Speed of boat in upstream=B-S=4km/h Speed of boat in downstream=B+S=13km/h Let the distance =x ATQ- x/4 +x/13 =34 17x=34×52 X=104km.
40 42 87 266 ? 5366
22, 23, 31, 57, 122, 247
32, 65 , 196, 785, ? , 23557
19.11 × 5.98 + 20.03 × 3.12 – 34.95 + 97.9 × 3.02 =?
7200 7200 3600 1200 300 ?
...0.5 1.5 5 ? 76 385
...24, 33, 50, ?, 108, 149
25, 200, 40, ?, 64, 512
1400 350 700 175 ? 87.5
...7 12 33 ? 635 3804
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