Rita has 15 coins in denomination of 25 paise and 50 .if the amount with her is ₹5 find the number of coins of each denomination with her
Open in App
Solution
let no. of 25paisa coins be x and 50paisa coins be y then we have, x+y=15........1 now their total value is 5rupees i.e 500 paisa no. of 25 paise coins = x no. of 50 paise coins = y 25x+50y=500 paisa.....(2) from the equation number (1) y=15-x Then equation number (2) become 25x+50(15-x)=500 25x+750-50x=500 750-500=25x That is 25x=250 Therefore x=10 we have y=15-10 y=5 Therefore number of 25 paisa coin is 10 and number of 50 paisa coin is 5