Question

In my pocket there are rs. 25 consisting of only the denomination of 20 paise and 50 paise thus there are total 80 coins in my pockey find the no. Of coins of 50 paise solution

Answer 1

total amount in the pocket= rs.20
no:of 20 pause coins=20×50=10rs
no.of 50 pause coibs=50×30=15rs
total 80 coins =25rs
Then 50 paise coins in yr pocket= 30 coins

Answer 2

Answer:

Total number of 50 p coins = 30

Step-by-step explanation:

Let number of 20 p coins be x and number of 50 p coins be y

Total number of coins in the pocket = 80

⇒ x + y = 80

⇒ x = 80 - y ..........(1)

Total amount of money = Rs. 25

⇒ 0.20x + 0.50y = 25

⇒ 2x + 5y = 250

Now, Putting value of x from equation (1)

⇒ 2(80 - y) + 5y = 250

⇒ 160 - 2y + 5y = 250

⇒ 3y = 90

⇒ y = 30

Now, Putting y = 30 in equation (1)

⇒ x = 80 - 30

⇒ x = 50

Therefore, Total number of 50 p coins = 30