Tiêu đề Ganit (C) (With keywords in English) (Mathematics)_Class 8_Bengali medium-137-163_compressed.pdf ✅

131 ¬Ûø¬ı ̨ ̃±À̬ı ̨ Ó≈¬ ̆Ú± ά◊√± ̋√¬ı ̨Ì 2 – ¤È¬± ¬ıÀ ̆¬ı ̨ √± ̃ 150 Ȭ±fl¡±o ̊ø√ Œ√±fl¡±Ú√±¬ı ̨ 10% Œ ̆±fl¡ ̧±ÀÚ ø¬ıøSê fl¡À¬ı ̨Ú Ó¬± ̋√À ̆ ¬ı ̆øȬ fl¡Ó¬ Ȭ±fl¡± ̊ ̨ ø¬ıøSê fl¡¬ı ̨À ̆Ú∑ ̧ ̃±Ò±Ú – Œfl¡Ú± √± ̃ CP = 150 Ȭ±fl¡± Œ ̆±fl¡ ̧±ÀÚ¬ı ̨ ̇Ó¬±— ̇ l% = 10% ¬ı± l = 10 ¤‡Ú ’± ̃¬ı ̨± ̆±ˆ¬-Œ ̆±fl¡ ̧±ÀÚ¬ı ̨ ›¬Û¬ı ̨ fl¡À ̊ ̨fl¡øȬ ά◊√± ̋√¬ı ̨Ì ’±À ̆±‰¬Ú± fl¡ø¬ı ̨ ¤À ̧±ñ ά◊√± ̋√¬ı ̨Ì 1 – ¤fl¡øȬ ‚øάˇ 250 Ȭ±fl¡± ̊ ̨ øfl¡ÀÚ ¤fl¡Ê√Ú Œ√±fl¡±Ú√±¬ı ̨ 190 Ȭ±fl¡± ̊ ̨ ø¬ıøSêfl¡¬ı ̨À ̆ Ó¬±¬ı ̨ ̆±ˆ¬ ¬ı±Œ ̆±fl¡ ̧±Ú fl¡Ó¬ ̋√ ̆ ¤¬ı— ̇Ó¬±— ̇ ø ̋√À ̧À¬ı fl¡Ó¬ ̇Ó¬±— ̇ ̆±ˆ¬ ¬ı± Œ ̆±fl¡ ̧±Ú ̋√ ̆∑ ̧ ̃±Ò±Ú – ¤‡±ÀÚ Œfl¡Ú± √± ̃ [CP] = 250 Ȭ±fl¡± Œ¬ı‰¬± √± ̃ [SP] = 190 Ȭ±fl¡± Œ ̊À ̋√Ó≈¬ CP > SP ∴ Œ√±fl¡±Ú√±À¬ı ̨¬ı ̨ Œ ̆±fl¡ ̧±Ú ̋√ ̆o Œ ̆±fl¡ ̧±Ú = CP – SP = (250 – 190) Ȭfl¡± = 60 Ȭ±fl¡± ̇Ó¬fl¡¬ı ̨± Œ ̆±fl¡ ̧±Ú = = 250 60 × 100% = 24% × 100% Œ ̆±fl¡ ̧±Ú Œfl¡Ú± √± ̃ ¤fl¡øȬ Œfl¡Ã ̇ ̆ Œ√ø‡ ¤À ̧± – Œ¬ı‰¬± √± ̃ (SP) =       ± 100 100 x × CP ̆±Àˆ¬¬ı ̨ Ê√Ú... +x ¤¬ı—¬Œ ̆±fl¡ ̧±ÀÚ¬ı ̨ Ê√Ú... –x ¬ı...¬ı ̋√±¬ı ̨ fl¡À¬ı ̨±o × Œfl¡Ú± √± ̃ × ø¬ıøSê¬ı ̨ √± ̃ ø¬ıøSê¬ı ̨ √± ̃ = Œfl¡Ú± √± ̃ = CP =       100 − l 100 × SP ( ) 100 – Œ ̆±fl¡ ̧±ÀÚ¬ı ̨ ̇Ó¬±— ̇ 100 ( ) 100 100 – Œ ̆±fl¡ ̧±ÀÚ¬ı ̨ ̇Ó¬±— ̇ ’Ó¬¤¬ı SP = × CP 100 - l 100 Copyright, SCERT, Assam not to be republished