Today's Daily Quiz is Live — Test your knowledge & improve your rank
|
Logical Puzzles Medium 2 min

A farmer needs to transport three identical sacks across a narrow bridge. The bridge can support the farmer and only one sack at a time. Each crossing takes 2 minutes. The farmer starts and finishes on the same side after transporting all three sacks. What is the minimum total time?

Hint
Every sack must cross, and the farmer must return after each of the first two transfers.

Answer

10 minutes.

Explanation

The farmer crosses with sack 1, returns, crosses with sack 2, returns, then crosses with sack 3. That is five crossings, each taking 2 minutes.

Step-by-Step Solution

Cross sack 1 = 2.
Return = 2.
Cross sack 2 = 2.
Return = 2.
Cross sack 3 = 2.
Total = 10 minutes.
6 puzzles
Six people A, B, C, D, E and F sit in a row. A sits immediately to the left of B. C sits immediately to the right of D. E sits at the extreme left. F sits at the extreme right. Who occupies the two middle positions?
18 views Logical Puzzles
Medium
Five students P, Q, R, S and T scored different marks. P scored more than Q but less than R. S scored less than Q. T scored more than R. Who scored the highest and who scored the lowest?
15 views Logical Puzzles
Hard
Four tasks W, X, Y and Z must be completed one at a time. W must be before X. Y must be before Z. X must be before Y. Which task must be completed third?
26 views Logical Puzzles
Hard
Seven runners finish a race. A finishes before B. B finishes before C. D finishes after C. E finishes before A. F finishes after D. G finishes before E. Who must finish before everyone else?
17 views Logical Puzzles
Expert
A library has books numbered 1 through 50. Every fifth book is placed on a special shelf. How many books are on the special shelf?
15 views Logical Puzzles
Medium
Five people A, B, C, D and E stand in a line. A is immediately before B. C is somewhere after B. D is at the extreme right. E is not next to D. Who must be at position 3?
13 views Logical Puzzles
Medium