SENTRAL runs a kitchen that provides food for various canteens throughout a large organisation. A particular salad is sold to the canteen for $12 and costs $9 to prepare. Therefore, the contribution per meal is? (you need to calculate). Based upon past demands, it is expected that, during the 280-day working year, the canteens will require the following daily quantities: On 25 days of the year 40 meals On 50 days of the year 50 meals On 130 days of the year 90 meals On 75 days 70 meals Total 280 days The kitchen must prepare the meals in batches of 20 meals. Its staff has asked you to help them decide how many meals it should supply for each day of the forthcoming year