Puzzle 11

Hi!

Reminder: Please remember to forget to come to school tomorrow and wear your tie. All the teachers would appreciate that (probably). Have a great weekend and prepare for the upcoming tests next week!

Now for the 11th puzzle!

RATE AND SPEED

Difficulty: Easy

There are 5 questions to solve in total in this puzzle.


1. A certain kind of bacteria undergoes mitosis (cell division) once every minute. If it takes 1 day for the bacteria to fill up a petri-dish, how long does the bacteria take to fill half of the petri-dish?

These kinds of questions always appeared in every Science Paper, remember?


2. 3 men take 5 days to dig 12 holes. 6 men take 21 days to dig 32 holes. 5 men take 13 days to dig 22 holes. How long does it take for 2 men to dig 11 holes?


3. It takes 5 minutes to boil an egg. What is the minimum time taken to boil 4 eggs?


4. If 3 printers can print 300 sheets of paper in 3 hours, how long does it take for 9 printers to print 900 sheets of paper?


Oops... This last question is slightly harder than the rest.

5. In a 100m sprint, Charles beat Alysha by 10m and Winnie by 15m.
If Alysha and Winnie were to compete in another 100m sprint, and Winnie was given a 5m head start, who would win, Alysha or Winnie?
Assume they ran at constant speeds throughout both sprints and their speeds were the same as their original speeds in the first sprint.

Please remember to post your answers under the "Comments"!


Now for the answer to Puzzle 10! Drag your mouse over the empty space below for the answer.

The answer is "Quiz"! Look below for the full explanation...

Actually, the words in the list are not related by their definitions (although the first three words appear to be). They were just there to distract you. Look at the words from a different angle...

CWMFJORDBANKSGLYPHVEXT
ABCDEFGHJKLMNOPRSTVWXY

Note that when their letters are arranged alphabetically, the only alphabets missing are I, Q, U and Z. Rearranging them gives the word "Quiz"!

:)
Scottish/Irish Valley