Question

In my pocket there is rs. 25 consisting of only the denominations of 20 paise and 50 paise. Thus there are total 80 coins in my pocket. The number of coins of denomination 50 paise is

Answer 1

Answer:

20 paise = 50

50 paise = 30

Step-by-step explanation:

Total number of coins = 80

let 20 paise coins be x

50 paise coins be 80 - x

Total amount = Rs 25

0.20x + 0.50(80-x) = 25

0.20x + 40 - 0.50x = 25

40 - 0.30x = 25

0.30x = 40 - 25

0.30x = 15

x = 15/0.30

x = 50

y = 80 - x = 80 - 50 = 30

0.20(50) + 0.50(30)

10 + 15 = 25