A combine has annual fixed cost Rs. 300000 and operating cost Rs. 6000/ha. Which combination of annual use (ha) and custom rate (Rs./ha) gives break-even?
Break-even requires $A(R-6000)=300000$. Option A gives $200(7500-6000)=300000$. B, C and D give contributions of 63000, 576000 and 25000 respectively. Thus **200 ha and Rs. 7500/ha, A**.
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