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 25 p coins are there? Choose the correct choice from the following answers:
A) 155 B) 100 C) 125 D) 150 E) 120
Let the number of 25 p, 10 p and 5 p coins be x, 2x, 3x respectively.   Then, sum of their values = (25 x/100) + (20 x/100) + (15 x/100)   = 60 x /100   30 = 60 x / 100   x = 50 = 25 p coin   Hence, the number of 5 p coins = (3 * 50)= 
<gadget id="calculator">(3 * 50)</gadget>
<output>150</output>
150.   Ans - 150
<result>D</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 25 p coins are there?