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একটি সংখ্যার তিনগুণের সাথে দ্বিগুণ যোগ করলে যোগফল 90 হয়। সংখ্যাটি কত?

Options :

  • (A) $16$
  • (B) $18$
  • (C) $20$
  • (D) $24$

1 Answer

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Best answer
ধরি সংখ্যাটি $x$

শর্তমতে
$3x+2x=90$

বা, $5x=90$

বা, $x=\frac{90}{5}$

$\therefore x=18$

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