In April, Restaurant SlowFood has following operational records. Labour cost % was 32%, guests served per labour hour was 0.875, average guest spending was $250, and cost of labour was MOP560,000.

a.) What is the sales per labour hour for Restaurant SlowFood in April? (4)

b.) In May, the manager wants to increase her service level by increasing the number of staff on shift and for the same guest count. In this case the guest served per labour hour will drop to 0.7. Assuming the manager does not increase the labor cost on each labor hour, at the same time she expects an increase in average guest spending to $300 for higher service level. What will be the new cost of labour % and guests served per labour dollar in May? (6)