Directions: Read the following information to answer the question.
Three clocks in train station give following reading
Clock A: 8:00 clock
Clock B: 8:50 clock
Clock C: 8:20 clock
One clock is 20 min. fast. One clock is slow. One clock is off
by half an hour. Which of the following can be the real time?
8:00 (real time 7:40)
8:50 (no good would be fast)
8:20 (no good-real time would have to be 7:50 or 8:50)
8:00 (real time 7:40)
8:20 (no good would be fast)
8:50 (no good-real time would have to be 8:20 or 9:20)
8:50 (real time 8:30)
8:00 (ok would be slow)
8:20 (no good-real time would have to be 7:50 or 8:50)
8:50 (real time 8:30)
8:20 (ok would be slow)
8:00 (ok real time would have to be 7:30 or 8:30)
So, real time is 8:30.
Directions: Read the following information to answer the question.
Let, time taken by bus in the journey = t hours
Then, time taken by train in the journey = (6 – t) hours now,
40 × t + 55 (6 – t) = 285 40t + 330 – 55t = 285
15x = 45 ∴ x = 3
Hence, distance travel by train = 3 × 55 = 165
Directions: Read the following information to answer the question.
Let, speed of train = x km/hr
Relative speed while crossing 1st person = 5 ( x − 3) 18
Distance = length of train = 5 ( x − 3)× 9 ··· (I) 18
Relative speed while crossing 2nd person
= 5 ( x − 6) 18
|
Distance = length of train = |
5 |
( x − 6)×10 |
···(II) |
|||||
|
18 |
||||||||
|
From equation (I) & (II) we get |
||||||||
|
5 |
( x − 3)× 9 = |
5 |
( x − 6)×10 |
or 9x – 27 = 10x – 60 |
||||
|
18 |
||||||||
|
18 |
||||||||
x = 33 km/hr