In a bag there are coins of 50 paisa, 25 paisa and one rupee in the proportion 4:3:2. If there are in all Rs.42, the number of one rupee coins is?  Options:
A) 22  B) 26  C) 18  D) 16  E) 24
4x 3x 2x   50 25 100   200x + 75x + 200x = 3800   475x = 3800   x = 8 =&gt; 2x = 16   Answer: 16
<result>D</result>
In a bag there are coins of 50 paisa, 25 paisa and one rupee in the proportion 4:3:2. If there are in all Rs.42, the number of one rupee coins is?