exam Exam Numerical Ability Time Distance and Speed

From X, a car started at 10:30 AM and overtaken an auto and reached to Y at 1:30 PM. when the car returned at 2:30 PM the auto and car crossed at what time the auto reached to Y????

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4:30 PM

If the distance between X & Y is 'x' ,then
Car covers this distance in 3 hours So in next 1 hour at 2:30 PM when car crosses auto, it will cover x/3 distance in back journey.
Till this time of 4 hours ,auto covers x-(x/3)=2x/3 distance
So for auto time taken to cover distance of x = x*4/(2x/3) =6 hours
Auto will reach to 'Y' at after 6 hrs. i.e.at 4:30 PM.
10 years agoHelpfull: Yes(2) No(0)

exam Other Question

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Mark option (1) if the question can be answered by using the statement I alone but not by using the statement II alone.
Mark option (2) if the question can be answered by using the statement II alone but not by using the statement I alone.
Mark option (3) if the question can be answered by using either of the statements alone.
Mark option (4) if the question can be answered by using both the statements together but not by either of the statements alone.
Mark option (5) if the question cannot be answered on the basis of the two statements.

Every student of a class either belongs to group A or group B or both. Group A has all students who scored more than 80% marks in the first unit test. Group B has students scoring less than 90% marks in the first unit test. 20% of group A are boys while 35% of group B are girls. 30 girls scored more than 80% but less than 90%. If the class has 130 students, how many boys belong to group A and group B as well?
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Group B has 100 students.