Exam Maths Puzzle Numerical Ability

Sinha, Kripa and Shwetha are three anchors for three different Television shows. A survey shows that 30%,20% and 85% of the people watch Sinha, Kripa and Shwetha shows respectively.20% people watch exactly 2 of the 3 channels and 5% watch none.

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Exam Other Question

a train travelling at 72kmph starts overtaking a motorcyclist travelling at 36kmph at 4 pm and overtakes him in 20 secs. Then the train travels for exactly half an hour and starts crossing another motorcyclist travellng at 36kmph in the opposite direction. When will the second motorcyclist meet the first motorcyclist?
(A)4:45PM
(B)5 PM
(C)5:15PM
(D)none of these 12=6
6=3
8=?
the answer is 5 as
6*2=12
3*2=6
and
6+2=8
so
3+2=5