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Start learning 50% faster. Sign in nowLet the speed of boat in still water be a km/hr and that of stream be b km/hr. Therefore, 32/(a + b)= 2 ⇒ a + b = 16 ………..(i) 32/(a – b)= 4 ⇒ a + b = 8 ………..(ii) On adding, eq (i) and (ii) ⇒ 2a = 24 km/hr ⇒ a = 12 km/hr
21 23 26 ? 39 51
...12 3 15 ? 153 756
...3 4.5 6.75 10.125 15.1875 22.78125 ?
...In each of the following questions the number series is given. One term of the series is denoted by x. You have to calculate of value of x and by using ...
19 20 42 129 ? 2605 .
24 ? 14 16 39 88.5
...31, 16.5, 18, ?, 60.5, 154.25
11 28 47 70 ? 130
...49 121 169 289 361 ?
...12 23 65 ? 1239 7409
...