A collection of 16 coins, each with a fac… | Answer

Subject

Bank Exam

Topic

One Bank Ltd. - Special Cadre Officer - 2018

A collection of 16 coins, each with a face value of either 10 paisa or 25 paisa, has a total face value of Tk. 2.35. How many of the coins have a face value of 25 paisa ?
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Explanation

Solution: প্রশ্নে বলা হচ্ছে, 10 পয়সা এবং 25 পয়সার 16 টি মুদ্রা রয়েছে সবগুলো মুদ্রা মিলে 2.35 টাকা হলে 25 পয়সার কতটি মুদ্রা রয়েছে ? ধরি, 10 পয়সার মুদ্রা আছে x টি 25 পয়সার মুদ্রা আছে (16 - x) টি প্রশ্নমতে,

\frac{x}{{10}} + \frac{{16 - x}}{4}

= 2.35 =>

\frac{{2x + 80 - 5x}}{{20}}

= 2.35 => - 3x + 80 = 2.35

\times

20 => - 3x = 47 - 80 = - 33 => x =

\frac{{ - 33}}{{ - 3}}

= 11 x = 11 অর্থাৎ 10 পয়সার মুদ্রা আছে 11 টি 25 পয়সার মুদ্রা আছে = 16 - 11 = 5 টি

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A collection of 16 coins, each with a face value of either 10 paisa or 25 paisa, has a total face value of Tk. 2.35. How many of the coins have a face value of 25 paisa ?Reading

A collection of 16 coins, each with a face value of either 10 paisa or 25 paisa, has a total face value of Tk. 2.35. How many of the coins have a face value of 25 paisa ?

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A collection of 16 coins, each with a face value of either 10 paisa or 25 paisa, has a total face value of Tk. 2.35. How many of the coins have a face value of 25 paisa ?
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