{"book":"adl0290","page":709,"text":"۲۳۹\n\n۵ من : ۱۲ من :: ۶۰ روپیه : جواب\nجواب = ۶۰ × ۱۲ / ۵ = ۱۴۴ روپیه\nمثال ۲ - اگر یک کار را ۱۲ نفر در ۵ روز\nکنند پس معلوم کنید که ۱۵ نفر کار مذکور\nرا در چند روز کرده میتوانند ؟\nظاهر است که اگر تعداد نفری دو چند یا سه\nچند یا چهار چند شود تعداد روز بقدر دو چند\nیا سه چند یا چهار چند کم میشود -\nلهذا نسبت معکوس تعداد نفری مساوی\nنسبت تعداد روز میباشد -\n:: ۱۵ نفر : ۱۲ نفر :: ۵ روز : جواب\nجواب = ۱۲ × ۵ / ۱۵ = ۴ روز\n۲۱۴ - ظاهر است که رقم دویم تناسب\nنسبت به رقم اول بلحاظ این امر کم یا زیاده\nمی شود که رقم چهارم نسبت به رقم سوم کم یا\nزیاده باشد بنابرین قاعده ذیل برای ترتیب\nارقام اربعه متناسبه حاصل میشود - جواب را\nبه حرف ج تعبیر کرده در مقام رقم چهارم\nبنویسید و از سه مقدار معلوم آن مقدار را که","chars":688,"image":"https://storage.googleapis.com/adl-page-images/adl0290/00709.jpg","first_page":1,"last_page":1089,"title":"ʻIlm-i ḥisābعالم حساب","permalink":"https://afghanpress.org/book/adl0290/709","canvas":"https://afghanpress.org/iiif/adl0290/canvas/709","source":"https://afghanistandl.nyu.edu/books/adl0290/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0290_download.pdf","rights":{"image":{"statement":"Public domain. NYU states: \"All works presented on this website are, unless otherwise indicated, in the public domain. The images available on this website may be freely reproduced, distributed and transmitted by anyone for any purpose, commercial or non-commercial.\"","uri":"http://rightsstatements.org/vocab/NoC-US/1.0/","holder":"New York University Libraries","source":"https://afghanistandl.nyu.edu/about.html","delivery":"Images are served from a copy mirrored by this project, not from NYU's servers, under the reproduction terms above.","endorsement":"This is an independent project. It is not affiliated with, endorsed by, or reviewed by New York University."},"text":{"statement":"Machine-generated transcription, dedicated to the public domain under CC0 1.0. No warranty of accuracy: see the provenance block on every page.","uri":"https://creativecommons.org/publicdomain/zero/1.0/","holder":"Steps Ventures"}},"provenance":{"text_produced_by":"gemini-3.1-pro-preview","thinking_level":"low","read_completed":"2026-08-09","per_page_confidence":null,"per_page_confidence_note":"Not recorded during the corpus run. No calibrated per-page score exists, and none is estimated here.","human_reviewed":false,"accuracy_context":"Roughly two thirds of characters agree with a modern printed edition of the same text. Much of the disagreement is editorial, not misreading. Treat the transcription as a finding aid and read the page image before quoting.","primary_source":"The page image. The text is an index into it."}}