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## Quiz of the Month (February 2005)

### Hector C. Parr

***

#### SOLUTION TO LAST MONTH'S QUIZ

```   1.  7
2.  15
3.  1.43```

Notes
```  1. Namely: 1c, 2c, 2c, 5c, 10c, 20c, 20c

2. Fifteen possibilities, ranging from:  20c+5c
to:  5c+5c+5c+2c+2c+2c+1c+1c+1c+1c

3. Namely: 50c+20c+20c+20c+20c+5c+2c+2c+2c+2c```

#### THIS MONTH'S QUIZ

```  The computer in my car displays the fuel consumption in
miles per gallon (mpg) averaged over the distance travelled
since the 'cancel' button was last pressed. At the start of
today's 60 mile journey it read 36.0 mpg, and I failed to
cancel this reading. After travelling the first 20 miles of
today's journey the reading was 34.0 mpg, and after a further
20 miles it was 33.0 mpg. Assuming that the fuel consumed per
mile remained constant during today's journey, calculate:

1. The distance the car had travelled since the last press of
the cancel button before the start of today's journey,

2. The actual mpg during today's journey,

3. The mpg reading at the end of today's journey.```
***