Question
Two boats A and B are rowing in two different rivers M
and N respectively. Find the distance covered by boat B in 12 hours downstream. i) Boat A can cover 360 km downstream in 6 hours while B can cover 96 km upstream in 4 hours. ii) Speed of streams (M + N) = 7 km/hr iii) Distance cover by B in y hours downstream is 150 km more than the distance cover by B in (v+5) hours upstream.Solution
Speed of boat A in still water = VA km/hr Speed of boat B in still water = VB km/hr Speed of river M = m km/hr Speed of river N = n km/hr In 12 hrs boat B will cover 12(VB + n) km From Statement i: VA + m = 60 ------(1) VB + n = 24 ------(2) From statement (ii) m + n = 7 -----(3) From statement iii: One more variable is added as y so we cannot find the answer even combining all the three statements.
18 45 90 235 450 1125 2250
...42, 85, 172, 343, 687, 1375
1, 4, 20, 126, 1026, 10170
79, 152, 231, 314, 405, 500
Find the wrong no in the given number series.
11, 18, 32, 60, 112, 228
Find the wrong number in the given number series.
21, 11, 12, 19, 41, 105
- Find the wrong number in the given number series.
154, 137, 114, 84, 46, 11 - Find the wrong number, in the given number series.
2, 5, 11, 23, 47, 97, 191 23, 36, 53, 69, 95, 124, 155
109 106 101 94 86 74
...
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