Question
A captain can navigate a ship at a speed of 5 km/hr in
calm waters. With a current moving at a speed of 3 km/hr, he takes 12 hours longer to travel 'd' km upstream compared to traveling the same 'd' km downstream. Determine the value of '2d'.Solution
we can say that, Upstream speed of the Ship = 5 – 3 = 2 km/hr Downstream speed of the Ship = 5 + 3 = 8 km/hr ATQ, (d/2) – (d/8) = 12 Or, 4d – d = 12 × 8 Or, d = 96/3 = 32 Therefore, 2d = 64 km
More Boats and streams Questions
Find the missing number in the given number series.
2, 5, 11, 23, 47, ?418, 406, 430, 382, 478, ?, 670
1 12 31 58 93 ?
What will come in place of the question mark (?) in the following series?
92, 153, 220, ?, 364, 443
13 19 32 52 ? 113
250 Â Â Â 25 Â Â Â Â 5 Â Â Â Â ? Â Â Â Â 0.6 Â Â Â Â Â 0.3
10, 15, 25, 35, ?, 65
What will come in place of the question mark (?) in the following series?
2, 5, 14, 41, 122, 365, ?
4    11     22     ?      56    79    106
...48, 24.5, ?, 39.75, 81.5, 206.25, 621.75
Relevant for Exams:
