(chatquestion)...4. A farmer wants to plant coffee and potatoes. Coffee needs 3 men per hectare and potatoes need also 3 men per hectare. He has 48 hired labourers available. To maintian hectare. of coffee he needs 250 shillings while a hectare of potatoes costs him 100 shillings. Find the greatest possible area of land he can sow if he is prepared to use 25,000 shillings. 5. A technical school is planning to buy two types of machines. A lathe machine needs 3m of floor space and a drill machine requires2m2. Thetotalspace available is30m2. The costofone lathe machine is 25,000 shillings, a drill machine costs 30,000 shillings, and the school can spend not more than 300,000 shillings. Find the greatest number of machines the school can buy. 6. A farm is to be planted with wheat and maize while observing the following constraints:

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