Solutions by everydaycalculation.com
1st number: 1 6/10, 2nd number: 1 3/15
1610 - 1815 is 25.
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Related: 32/10-18/15 16/10-36/15 16/20-18/15 16/10-18/30 48/10-18/15 16/10-54/15 16/30-18/15 16/10-18/45 80/10-18/15 16/10-90/15 16/50-18/15 16/10-18/75 16/70-18/15
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