A second grade class had a spelling bee with 4-letter and 5-letter words. They used 25 words that had a total of 120 letters. Which system of linear equations represents the problem?

X plus four y equals twenty-five. Five x plus y equals one hundred twenty.

Five x plus four y equals one hundred twenty. X plus y equals twenty-five.

Five x plus four y equals twenty-five. X plus y equals one hundred twenty.

X plus four y equals one hundred twenty. Five x plus y equals twenty-five.

Question

A second grade class had a spelling bee with 4-letter and 5-letter words. They used 25 words that had a total of 120 letters. Which system of linear equations represents the problem?

X plus four y equals twenty-five. Five x plus y equals one hundred twenty.

Five x plus four y equals one hundred twenty. X plus y equals twenty-five.

Five x plus four y equals twenty-five. X plus y equals one hundred twenty.

X plus four y equals one hundred twenty. Five x plus y equals twenty-five.

the_fizicx99 · Answer

x + y = 25

4x + 5y = 120