Ahousewife has sufficient charcoal to last 12 days provided she only uses 2 buckets of charcoal a day. how long will the charcoal last if she uses 3 buckets a day?

I’m posting this again on here because the other person was incorrect, though I already answered on the other version of this question. :)

Alright, here is how you do this.

We know that if the housewife uses 2 buckets a day during the course of 12 days, that means, all in all, she used 6 buckets during those twelve days.

This means that if she uses 3 buckets a day, she will only have enough charcoal for 2 days, because 6/3 is 2.

Therefore, your final answer is 2 days

I hope this helped! Comment if you need me to explain it further or have any questions regarding it! :)