Solutions by everydaycalculation.com
1st number: 1 5/10, 2nd number: 1 10/20
1510 - 3020 is 01.
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Related: 30/10-30/20 15/10-60/20 15/20-30/20 15/10-30/40 45/10-30/20 15/10-90/20 15/30-30/20 15/10-30/60 75/10-30/20 15/50-30/20 15/70-30/20
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