In a bag there are coins of 50 paisa, 25 paisa and one rupee in the proportion 5:6:2. If there are in all Rs.36, the number of 25 paisa coins is?  Choose one
A) 30
B) 36
C) 32
D) 34
E) 38
5x 6x 2x   50 25 100   250x + 150x + 200x = 3600   600x = 3600   x = 6 =&gt; 6x = 36   ANSWER:36
<result>B</result>
In a bag there are coins of 50 paisa, 25 paisa and one rupee in the proportion 5:6:2. If there are in all Rs.36, the number of 25 paisa coins is?