Solutions by everydaycalculation.com
1630 - 1530 is 130.
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Related: 32/30-15/30 16/60-15/30 16/30-15/60 48/30-15/30 16/30-45/30 16/90-15/30 16/30-15/90 80/30-15/30 16/30-75/30
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