A bag contains the amount of ₹25.8 in the form of 1 rupee, 50 paise and 10 paise coins and are in the ratio of 3 : 2 : 3. How many 50 paise coins are there in the bag?

12

Re 1 : 50 p : 10 p

 3     :  2    :    3

⇒ 1 x 3 : 0.5 x 2 : 0.1 x 3

⇒ (3 + 1 + 0.3) units = Rs. 25.8

⇒ 4.3 units = 25.8

⇒ 1 unit = 6

⇒ No. of 50 p coins = 2 x 6 = 12.