On Tuesday Ray rode his bike 10 miles. On Wednesday he increased Tuesday's distance by 5 miles. On Thursday he decreased Wednesday's distance by 7 miles. On Friday he increased Thursday's distance by 12 miles. How many total miles did Ray ride over the 4-day period?

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PSC DLRS – Chainman BCS 30th BCS Preli - 2010 22nd BCS Preli - 2001 NTRCA 11th NTRCA College - 2014 Primary Teacher Pre-Primary Teacher - 2016 MoEWOE Deputy Assistant Director - 2017 MoF Office Assistant - 2011 PD Data Processing Operator - 2003 DSS Union Social Worker - 2016 MoD CSO and Assistant Director - 2016 MoE, MoRTB, MoHPW SAE (Civil) - 2015 OCAG Auditor - 2015 Krishi Bank BKB Data Entry Operator - 2012 PMO Various Posts - 2013 SBC SBC Asst. Manager - 2016 IBBL IBBL Officer - 2013 RAKUB RAKUB Officer - 2017 BAEC – Office Assistant Cum-Computer Typist - 2018 Combined Bank Combined Bank Officer (IT) - 2018 MoIB Assistant Director - 2004 DNC Office Assistant - 2018 Combined Bank Officer (General) - 2018 Primary Teacher (Phase 4) - 2019 MOHFW – Office Assistant Cum Computer Operator - 2019 ECS – Storekeeper - 2019 LGED – Accounts Assistant - 2021 BREB – General Manager - 2022 GrameenBank Grameen Officer - 2023 LGED – Electrician - 2023 BPO - MC – Mail Operator - 2023 BPDB – Security Guard - 2023 CAAB – Upper Division Accountant - 2023 Primary Teacher (Phase 1) - 2023 CAAB – Inspector / Senior Officer / Security Officer - 2024 DG Food – Office Assistant cum Computer Typist - 2013 Mymensingh PBS – Meter Reader/Messenger - 2024 DMLC – Junior Teacher - 2025 PGB PLC Various Posts - 2025 IBBL Officer - 2016 BAEC – Security Attendant 2 - 2025 DLRS – Chainman - 2025 Supreme Court – Office Assistant - 2025 গণিত পাটিগণিত প্রাথমিক ধারণা (Basic Concept)