Others Maths Puzzle

Q. What is the symmetric difference between scores by Ranjit and Ah Long?
(a) Ranjit plays a game with Ah Long and Abu. The total score is 100 marks. At first round, Ranjit scores 45 marks, Abu scores 15 marks higher than Ah Long and Ah Long scores 20 % lower than Ranjit marks. For second round, Abu scores higher than others, while Ah Long and Ranjit shares the same marks with 95 and 76 marks respectively. The last round, Abu did not get any mark, Ah Long scores 10 % higher than Ranjit and Ranjit scores 40 % from the total marks.

Read Solution (Total 1)

Ans is 5.

1st Round:
Ranjeet: 45,
Abu:55 (15 marks higher than Ah long),
Ah Long:36 (20% lower than Ranjeet, 20% of 45=9,45-9=36)

2nd Round:
Ranjeet: 76,
Abu: 95,
Ah long: 76 (For second round, Abu scores higher than others, while Ah Long and Ranjit shares the same marks with 95 and 76 marks respectively)

Last Round:
Ranjeet: 40 (40% of total marks 100=40)
Abu: 0 (Abu didn't get any mark)
Ah long: 44 (10% of 40=4, so 40+4=44)

Now total marks by Ranjeet=45+76+40=161
total marks by Ahlong=36+76+44=156

Difference=5.
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