In thirty minutes Andy can either pick two baskets of grapes or weave three yards of cloth.In thirty minutes Brenda can either pick a basket of grapes or weave a yard of cloth.Both Andy and Brenda consume grapes and cloth.

1. If Andy spends part of his day weaving cloth for Brenda and Brenda spends part of her day picking grapes for Andy,

Aboth might be better off.

Bboth could never be better off.