甲、乙、丙、丁四人共同生产一批零件，甲生产的占其他三人生产总数的2/13，乙生产的占其他三人生产总数的1/4，丙生产的占其他三人生产总数的4/11.已知丁生产了60个，甲、乙、丙、丁各生产零件多少个？

推荐阅读：
Facebook Recommends Psychiatrist’s Friends Connect, Completely V　 3 Link Building Methods Every Blogger Should Be Using　 3 Types of Sticky Content Bloggers Should Be Using　 The Basics of Building an SEO-Friendly Site with Wix　 Social Media Image Sizes Cheat Sheet for 2016　 The Blogging Evolution: From Hobby To Marketing Tool　 We Want Plates! Food Blogger Criticizes Quirky Food Serving Tren　 Company Blog Tips: How To Keep Your Company Blog Out Of A Rut　 10 Tips to Humanize Your Company Blog　 10 Communication Skills Every Blogger Should Hone