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Let A is the starting point and B is actual point where train started facing problems C is the assumed point train started facing problems Given BC = 15km and Difference of is 30 minutes basically due to the speed covering this 15km. Let original speed = x km/hr ∴ Speed after clutch problem = 2x/5 km/hr ⇒ 15/(2x/5) - 15/x = 30/60 ⇒ 75/2x - 15/x = 1/2 ⇒ (75 - 30 )/2x = 1/2 ⇒ (45 )/2x = 1/2 ⇒ x = (45 × 2)/2 ∴ x= 45 km/hr
4, 10, 19, 30, 43, ?
64, 32, 48, 120, 420, ?
What value should come in the place of (?) in the following number series?
71, 72, 76, 103, ?, 244
What will be the geometric mean of 'Q' and 'P - Q'.
7, 176, ?, 378, 427, 452
...12, 33, 45, 78, 123, 201, ?
161 173 191 215 245 ?
...30, 42, 54, 66, ?, 90
246, 102, 202, ?, 174, 158
196, 196, 203, 229, 292, ?