How many fewer tickets were sold by Bob than Alice?
30
How many fewer candy bars were sold by Linda than David?
10
How many fewer candy bars were sold by James than Mary?
10
How many more tickets were sold by Bob than David?
20
How many fewer tickets were sold by Carol than Alice?
10
How many tickets were sold by Bob and David combined?
80
How many candy bars were sold by Mary and David combined?
110
How many more candy bars were sold by David than Linda?
10
How many more candy bars were sold by Mary than David?
30
How many fewer tickets were sold by David than Bob?
20
How many fewer candy bars were sold by Linda than Mary?
40
How many fewer tickets were sold by David than Carol?
40
How many more tickets were sold by Carol than Bob?
20
How many candy bars were sold by David and James combined?
100
How many candy bars were sold by James and David combined?
100
How many tickets were sold by David and Bob combined?
80