The total number of students who attended Lacey's high school is represented with the expression
.

The total number of students who attended Lacey's high school is 40,000.
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The total number of students who attended Monique's high school is represented with the expression
.

The total number of students who attended Monique's high school is 300,000.
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Monique's high school has a greater number of students than Lacey's high school does.