Solutions by everydaycalculation.com
1240 - 1040 is 120.
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Related: 24/40-10/40 12/40-20/40 12/80-10/40 12/40-10/80 36/40-10/40 12/40-30/40 60/40-10/40 12/40-50/40 84/40-10/40 12/40-70/40
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