Respuesta :
If the farmer's plot of land is 6 by 18, he has [tex] 6 \cdot 18 = 108 [/tex] square meters of land. Each square meters yields 2kg of corn, so 108 square meters yield [tex] 108\cdot 2 = 216 [/tex] kg of corn. So, the farmer's plot is not enough.
Since every square meter yields 2kg of corn, [tex] m [/tex] square meters yield [tex] 2m [/tex] kg of corn. So, in order to yield 600 kg, you need
[tex] 2m = 600 \implies m = 300 [/tex] square meters of plot.