MBA Exam Logical Reasoning Seating Arrangement

Two friends Aku and Chika are stationed at two different points P and Q respectively along the same bank of a straight stretch of a flowing river. The ratio of the speeds of Aku and Chika in still water is 1 : 3. When Aku and Chika swim in the opposite directions from P and Q respectively, they meet at a point 30 meters from Q. If the time taken by Aku to reach point Q and Chika to reach point P from their original positions P and Q is the same, then the distance (in meters) between P and Q is

1) 45
2) 90
3) 120
4) 60

Read Solution (Total 1)

Sc-Ss=Sa+Ss Ss speed of stream
Sa speed of aku Sc speed of Chika
also sa=3sc
therefore we get Sa=Ss
30/(Sa+Ss)=(x-30)/(Sc-Sa)
solving we get x=60
answer 4)60
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MBA Other Question

In a famous race “Catch the Train”, a person standing inside a tunnel AB at a distance 50m from the end A, notices the train approaching the end A of the tunnel from the outside. If he runs towards the end of A then the train would meet it exactly at A if the person runs towards the end B, then the train would meet it exactly at B. Which of the following is not a possible values of length AB (in m) of the tunnel?

1) 130
2) 120
3) 100
4) 90
5) More than one value
Find the unit digit:1^2! + 2^3! + 3^4! + 4^5! +.........+150^151! +...153^154!

1) 1
2) 0
3) 5
4) 7