Answer:
27 logs of wood.
Step-by-step explanation:
From the question given above, we were told that:
4 hours of camp fire requires 6 logs of wood.
Thus, we can obtain the number of logs of wood needed to keep the camp fire burning for 18 hours as follow:
4 hours of camp fire requires 6 logs of wood.
Therefore, 18 hours of camp fire will require = (18 × 6)/4 = 27 logs of wood.
Thus, 27 logs of wood is needed to keep the camp fire burning for 18 hours.