Question

Anya's piggy bank is full of 10 rupees and 5 rupees coins it contains three times as many 5 rupees as 10 rupees coins the total amount of money in piggy bank is 300 rupees how many coins of 10 rupees coins are there in piggy bank

Answer 1

Answer:

Number of 10 rupee coins in the piggy bank is 12.

Step-by-step explanation:

Let x be the number of 10 rupee coins.

Let y be the number of 5 rupee coins.

From the first given, the piggy bank has three times as many 5 rupees as 10 rupees coins. Therefore,

y = 3x    (1)

From the second given, the total money in the piggy bank is 300 rupees. Therefore,

10x + 5y = 300      (2)

Substitute equation (1) in equation (2):

10x + 5(3x) = 300

25x = 300

x = 12.