Question
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.Solution
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.
- Find the wrong number in the given number series.
4, 10, 22, 46, 92, 186 Find the wrong number, in the given number series,
24, 48, 88, 144, 224, 304
- Find the wrong number in the given number series.
12, 21, 5, 38, 2, 71 1080, 1058, 1016, 934, 772, 440
Find the wrong number in given number series.
1177, 1161, 1125, 1061, 961, 837.
17, 33, 69, 133, 233, 370
332, 404, 350, 390, 360, 380
25, 32, 47, 77, 126, 198
147 490 707 831 895 930
3, 8, 28, 88, 258, 648