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.42, the number of 25 paisa coins is?  Choose the correct choice.
A) 76  B) 42  C) 17  D) 14  E) 44
5x 6x 2x   50 25 100   250x + 150x + 200x = 4200   600x = 4200   x = 7 =&gt; 6x = 42   Answer:42
<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.42, the number of 25 paisa coins is?