Question

a farmer grows only corn and lettuce. the farmer plans to plant 455 rows this year. the number of rows of corn will be 2.5 times the number of rows of lettuce. how many rows of each vegetable does the farmer plan to plant?

Answer 1

x - rows of corn,
y - rows of lettuce:
x = 2.5 y
x + y = 455
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2.5 y + y = 455
3.5 y = 455
y = 455 : 3.5
y = 130
x = 2.5 * 130 = 325
Answer: The farmer plans to plant 325 rows of corn and 130 rows of lettuce.