The quilt is made of 16 squares on one side and 16 on the other so 16+16 = <<16+16=32>>32 squares total
She has already sewn 25% of the quilt so she has sown together .25*32 = <<25*.01*32=8>>8 squares
Betsy still has 32-8 = <<32-8=24>>24 more squares to sew together
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