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20. Төрт қарбыз бен екі асқабақтың салмағы он екі қауынның салмағына тең. Екі қарбыздың салмағы 4 қауынның салмағына тең. Бір асқабақ неше қауынмен теңеседі? (A) 5 (B) 4 (C) 3 (D) 2

Ask by Hilton Weaver. in Kazakhstan
Nov 23,2024

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Бір асқабақ екі қауынмен тең. Жауабы: (D) 2

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Мәселені шешу үшін, қарбыз, асқабақ және қауынның салмағын айнымалылармен белгілейік: қарбыздың салмағын \( W \), асқабақтың салмағын \( P \), қауынның салмағын \( C \) деп алайық. Мәселеде берілген екі теңдеуді мынадай жазуға болады: 1. \( 4W + 2P = 12C \) 2. \( 2W = 4C \) яғни \( W = 2C \) Екінші теңдеуден \( W \)-тың мәнін бірінші теңдеуге қойып, шешім алсақ, асқабақтың салмағын қауынмен салыстыра аламыз. Сөйтіп, асқабақтың салмағы қауынның 3-ке тең болатынын анықтап шығамыз. Сондықтан дұрыс жауап: (C) 3.

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