If a farmer buys chicken feed for £1.26 per tonne, pig feed for £2.74 per tonne and cattle feed for 78p per tonne. The feed can only be purchased by the tonne, and part tonnes aren't sold.
How much of each would he have if he had 100 tonnes for £100?
Reasoning
Q1 can't have A as its answer (otherwise it would contradict itself).
If Q1's answer was C (meaning Q4's answer was A), then Q3's answer would be C. However, Q2's answer should now be A, but this isn't allowed by Q1 (as Q4 is the first answer with A). This is a contradiction.
Therefore, Q1's answer is B (meaning Q3's answer is A).
For Q2's answer to be C, Q4's answer would have to be A, which would contradict Q4. Therefore, Q2's answer is B making Q4's answer B.
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Puzzle 60
A trout's tail weighs eight pounds.
Its head weighs as much as the tail and one-half of the body combined, and the body weighs as much as the head and tail combined.
