Mathematics
The number of match sticks contained in 50 match boxes is given below :
| Number of match sticks | Number of boxes |
|---|---|
| 40 | 6 |
| 42 | 7 |
| 43 | 12 |
| 44 | 9 |
| 45 | 10 |
| 48 | 6 |
(i) Using short cut method, find the mean number of match sticks per box.
(ii) How many extra match sticks are to be added to all the contents of 50 match boxes to bring the mean exactly equal to 45 match sticks per box?
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