MBA Exam Numerical Ability Arithmetic

Arun, Varun and Kiranmala started cycling simultaneously from town P and cycled at their respective constant speeds towards Q. On reaching Q, each of them immediately turned back and started cycling towards P. On his way back Arun met Varun and Kiranmala(proceeding towards Q) after 2 hours 40 minutes and 3 hours respectively whereas Varun on his way back met Kiranmala after 4 hours and 48 minutes.If Arun and Varun meet each other 20 km from Q, then find Kiranmala's speed (in km/hr).

1) 10
2) 15
3) 20
4) CBD

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MBA Other Question
hundred one rupee coins are to be distributed among A,B and C such that each receives at least one coin. The number of coins received by A,B and C should be multiples of 3,8 and 6 respectively. In how many ways can coins be distributed?Plz also explain the method!!

1) 26
2) 28
3) 24
4) 30
5) 32
 The circle o having a diameter 2 cm,has a square inscribed in it.Each side of the square is then taken as a diameter to form 4 smaller circles O".Find the total area of all four O" cicles which is outside the circle :I dnt knw ans...Plz provide solutions..

1) 2
2) pi-2
3) 2-pi/4
4) 2-pi/2