I solved this question to get 4 (B) as my answer as it mentions “extra” full days, However, the answer says its (D). Wouldn’t this omit the use of the word extra? Please let me know what am missing here.
ANS:
The answer is B, not D - you may want to check the errata for that book. See A hunting lodge has enough fuel to keep 20 rooms heated for fourteen : Problem Solving (PS)