Question

Emily has 250 books. If Frank were to double the number of books that he now owns, he would have more than Emily has.

Answer 1

x - the number of Frank's books.
y - the number of Emily's books.

Emily has 250 books:
y = 250 

If Frank were to double the number of books that he now owns (2x), he would have more than Emily has (y):
2x > y
2x > 250
x > 250/2
x > 125

Answer 2

answer is 250 < 2 b

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