I had about Rs.14.40 in one rupee coins and 20 paise coins when I went out for shopping.
When I returned, I found that number of 20 paise coins and 1 rupee coins are exactly as 1
rupee and 20 paise coins respectively, that I had originally. I came back with one third of
what I had started out with. How many one rupee coins did I have initially? Choose the correct choice from the following choices:  A) 10  B) 12  C) 14  D) 16  E) 18
Let x be number of 1 rupee coins and y be number of 20 paise coins initially.   Initially : 1x + .2y =14.40   Finally : 1y + .2x = 4.80 (as number of coins interchange)   Solving we get, x=14 and y=2   Therefore there was 14 one rupee coins and 2 20 paise coins initially.   ANSWER:14
<result>C</result>
I had about Rs.14.40 in one rupee coins and 20 paise coins when I went out for shopping.
When I returned, I found that number of 20 paise coins and 1 rupee coins are exactly as 1
rupee and 20 paise coins respectively, that I had originally. I came back with one third of
what I had started out with. How many one rupee coins did I have initially?