Question
A train crosses a pole in 12 sec, and a bridge of length
170 m in 36 sec. Then the speed of the train is:Solution
Let the speed of train be s m/sec and length be l. A train crosses a pole in 12 sec. Distance = speed time l = 12s ---(1) A train crosses a bridge of length 170 m in 36 sec. Total length = l + 170 l + 170 = 36s ----(2) Put the value l in eq (2), 12s + 170 = 36s s = 170/24 = 7.08 m/sec = 7.08 $$\times \frac{18}{5} = 25.5 m/sec Speed of the train is 25.5 m/sec.
18, 37, 60, ?, 120, 157
8, 15, 44, 175, 874, ?
6, 7, 16, 51, 208, ?
Choose the missing term.
3F, 6G, 11I, 18L,?
14.8% of 7200 – 16.4% of 6200 + 15.09% of 8100 = 10% of ?
5, 5, 15, 75, ?, 4725
16, 15, 24, -1, 48, ?
82, 98, 130, 178, 242, ?
What will come in place of the question mark (?) in the following series?
45, 68, 114, 183, 275, ?
What will come in place of the question mark (?) in the following number series?
124, 131, 117, ?, 110, 145
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