# Time and Measurement - May 2008, Stage 3&4

## Problems

### Thousands and Millions

##### Stage: 3 Challenge Level:

Here's a chance to work with large numbers...

### All in a Jumble

##### Stage: 3 Challenge Level:

My measurements have got all jumbled up! Swap them around and see if you can find a combination where every measurement is valid.

### Zin Obelisk

##### Stage: 3 Challenge Level:

In the ancient city of Atlantis a solid rectangular object called a Zin was built in honour of the goddess Tina. Your task is to determine on which day of the week the obelisk was completed.

### Round and Round a Circle

##### Stage: 4 Challenge Level:

Can you explain what is happening and account for the values being displayed?

### An Average Average Speed

##### Stage: 4 Challenge Level:

My average speed for a journey was 50 mph, my return average speed of 70 mph. Why wasn't my average speed for the round trip 60mph ?

### Trigonometric Protractor

##### Stage: 4 Challenge Level:

An environment that simulates a protractor carrying a right- angled triangle of unit hypotenuse.

### Jumping Gerbils

##### Stage: 4 Challenge Level:

A conveyor belt, with tins placed at regular intervals, is moving at a steady rate towards a labelling machine. A gerbil starts from the beginning of the belt and jumps from tin to tin.

### Swimmers

##### Stage: 4 Challenge Level:

Swimmers in opposite directions cross at 20m and at 30m from each end of a swimming pool. How long is the pool ?