Sum of Rs.36.90 is created by 180 coins which are possibly 10 paise coins or 25 paise coins. The count of 10 paise coins are	Choose the correct choice from the following.
A) 54  B) 55  C) 56  D) 57  E) 58
Explanation :   -&gt; Total count of coins = 180   If “a” is count of 10paise coins and “b” be count of 25paise coins   A + b = 180 —Eqn (i)   -&gt; Given 10 paise coins and 25 paise coins create the addition = Rs. 36.90   [ (10a/100) + (25b/100) ]= 36.90   =&gt; 10a + 25b = 3690 ———(ii)   -&gt; Solving (i) and (ii)   a10 =&gt; 10 a + 10b = 1800 (-)   =&gt; 10a + 25b = 3690   - 15b = -1890   B = 1890 / 15= 
<gadget id="calculator">1890 / 15</gadget>
<output>126</output>
126   Substitute b value in eqn (i) , 54= 180 – 126 = 54   Therefore Count of 10 paise coins = 54   54nswer : 54
<result>A</result>
Sum of Rs.36.90 is created by 180 coins which are possibly 10 paise coins or 25 paise coins. The count of 10 paise coins are