Question 16
A beaver wants to build a dam to protect her house from a flood. She will use the log piles shown in the figure on the left to produce the dam shown in the figure on the right. It takes 1 hour to move a pile of logs one square up or down, and 2 hours to move a pile of logs one square to the right or left. What is the minimum number of hours it will take to build the dam?
Editorial practice scoring note: this historical 16-question source gives no numerical mark scheme. This import assigns 1 point to every question, 0 for wrong or blank answers, maximum 16. These are practice weights, not official historical marks; no special Star of hope penalty is inferred.
Editorial practice scoring note: this historical 16-question source gives no numerical mark scheme. This import assigns 1 point to every question, 0 for wrong or blank answers, maximum 16. These are practice weights, not official historical marks; no special Star of hope penalty is inferred.