A sum of Rs.45 is made up of 100 coins of 50 paise and 5 paise. How many of them are 50 paise coins?A40B50C75D80Answer: D. 80 Read Explanation: Let the coins be x and (100-x) 1/2x +(100-x)/4 = 45 2x + 100 - x=180 x = 80 Number of 50 paise coins is 80 Read more in App