A crew of up to five workers is to install a partition in at most three days. The crew completes five tasks in this order: framing, wallboarding, taping, sanding, priming. The crew is selected from the following list, which specifies exactly the tasks each person can do:
George: taping -
Helena: sanding, priming -
Inga: framing, priming -
Kelly: framing, sanding -
Leanda: wallboarding, taping -
Maricita: sanding -
Olaf: wallboarding, priming -
The following conditions must apply:
At least one task is done each day.
Taping and priming are done on different days.
Each crew member does at least one task during the installation, but no more than one task a day.
Each task is done by exactly one worker, completed the day it is started and before the next task begins.
Which one of the following could be a pair of members of the crew both of whom work on the same days as each other and each of whom perform two tasks?
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