അഞ്ചാം ഭാഗം 4 കൊണ്ട് വർദ്ധിച്ച ഒരു സംഖ്യയുടെ നാലാം ഭാഗം 10 കൊണ്ട് കുറച്ചതിന് തുല്യമാണ്. ആ സംഖ്യ കണ്ടെത്തുക.

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AFCAT 26 Aug 2022 (Shift 2) Memory Based Paper
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  1. 210 अनिका
  2. 280 (280)
  3. 260 प्रवानी
  4. 230 (230)

Answer (Detailed Solution Below)

Option 2 : 280 (280)
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കണക്കുകൂട്ടല്‍:

ആവശ്യമുള്ള സംഖ്യ N ആയിരിക്കട്ടെ.

ചോദ്യമനുസരിച്ച്,

\(\frac{N}{5}+4 = \frac{N}{4}-10\)

\(\frac{N}{4} - \frac{N}{5} = 14\)

\(\frac{5N-4N}{20} = 14\)

⇒ N = 280

∴ ആവശ്യമുള്ള സംഖ്യ 280 ആണ്.

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