In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is Rs. 30 in all, how many 5 p coins are there?	Choose one:	A) 50	B) 100	C) 150	D) 200	E) 250
Let the number of 25 p, 10 p and 5 p coins be x, 2x, 3x respectively.   25p of x,10p of 2x,5p of 3x;   25p=25/100=1/4;   10p=10/100=1/10;   5p=5/100=1/20;   1x/4 + 2x/10 + 3x/20=30;   5x+4x+3x=600;   12x=600 (3*50)   x=150 answer : 150
<result>C</result>
In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is Rs. 30 in all, how many 5 p coins are there?