Question

I have some 2 rupee coins and some 1 rupee coins. The number of 1 rupee coins is double that of 2 rupee coins. I have rs. 36 in all. Find the number of coins of each denomination..​

Answer 1

Answer:

Number of 1 rupee coin = 24

Number of 2 rupees coin = 12

Step-by-step explanation:

let the number of two rupees coins be x. since number of 1 rupee coin is double of number of two rupees coin.

so,

number of 1 rupee coin = 2x

given the total value of coin = 36

so,

According to the question,

2x + x = 36

3x = 36

x = 36/3

x = 12

so,

number of 2 rupees coins = 12

number of 1 rupee coin = 2x

= 2 × 12

= 24

so,

Number of 1 rupee coin = 24

Number of 2 rupees coin = 12

_________________

VERIFICATION:

The number of 1 rupee coins is double that of 2 rupee coins.

2 × 12 = 24

24 = 24

_________

value of coin = 36

24 + 12 = 36

36 = 36

__________

Answer 2

Answer:

Number of 1 rupee coin = 24

Number of 2 rupees coin = 12

Step-by-step explanation:

let the number of two rupees coins be x. so the number of 1 rupee coin = 2x

given total value of coin = 36

ATQ,

2x + x = 36

3x = 36

x = 36/3

x = 1

number of 2 rupees coins = x

= 12

number of 1 rupee coin = 2x

= 2 × 12

= 24

so,

Number of 1 rupee coin = 24

Number of 2 rupees coin = 12