.40% of the passengers from a train got down at station X, 75% of the remaining got down at station Y. If the remaining 12 were taken to station Z, how many passengers were there in the train?
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Answer:
Let the mo. of passengers on the bus be x
Given
30% of then got down ar station A
i.e
100
30x
people got down at station A and Remaining people on the bus
100
70x
also given that
70% of remaining people got down at station B
i.e,
100
70
(
100
70
x)=
100
49
x
i.e,
100
49
x
people got down ae station B
Remaining people on the bus x−
100
30x
−
100
49x
=
100
21x
Given
Remaining people were =1050
100
21x
=1050
x=5000
∴ there are 5000 people on the bus.
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