Chapter 7: The length of the call and the amount of the
donation for a charity donation drive.

Col 1: Min (length of call in minutes)
Col 2: Amount (of donation in $)
Col 3: Min (length of call in minutes)
Col 4: Amount (of donation in $)
Col 5: Min (length of call in minutes)
Col 6: Amount (of donation in $)

1     0       6   100      1     0  
4     5       5     0      9     0
1     5       5     0     14    85
1     0       2     0      1     5
3     0       1     0      3     5
9    50       6     0      1     0
1     5       4    10      1     5
5    75       4     5      1     0
1     5       1     0      1    80
2     0       5     5      3    20
4     0       5     0
3     0       1    10
1     0       5     0
5     0       1    40
1    90       1     5
4     0       3     0
1     0       1     0
1    10       7    10
1     0       2    75
2    75       2     0