A bakery shop is trying to decide the number of batches of a particular type of bread that he should bake each day. Daily demand ranges from 10 batches to 12 batches. Each batch of bread that is baked and sold yields a positive contribution of Shs. 40, but each batch of bread baked that is not sold yields a negative contribution of Shs.10. Assuming the bakery shop adopts the minimax regret decision rule, calculate the number of batches of bread that should be baked each day

be baked each day.