Answers for Day 2(25 August 2020)

Grade-IV to VI

Question 1. Can you spot the differences? Has 7 differences.

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Question 2. An aquarium has 300 fish.  They are looking to remove 45 of their fish and add 80 new ones.  How many fish will they have after this?

Answer. 335

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Puzzles for Grade-VII to X

Question 1. Which side will win the last tug of war?

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Answer. In the last event you can replace the dog by two girls and a boy because, as the second tug of war showed, they are equally matched. The last tug ofwar then becomes a contest between five girls and a boy on the left against four boys on the right. But the first event’ showed that five girls are as strong as four boys-that is, a boy is stronger than a girl. The tug of war comes down to a contest between five boys on the left and five girls on the right. So the left-hand team will win. This all supposes that each girl pulls as hard as the next, and similarly for the boys.

Question 2. A heavy tree trunk can be sawed into a 12 ft long piece in one minute.  How long will it take to saw into twelve equal pieces?

Answer. 11 minutes. The twelfth piece does not require sawing.