Question

Avni has a number of Rupees 1 and rupees 2 coins in her purse if the number of rupees 2 coins is double the number of rupees 1coins and the total amount is rupees 65 find the number of Rupees 1 and rupees 2 coins each .​

Answer 1

Answer:

Step-by-step explanation:

Let the number of 1 Rs coins be x

Number of 2 Rs coins = 2x

Given:-

(1 × x) + (2 × 2x) = 65

x + 4x = 65

5x = 65

x = 65/5

x = 13

No. of 1 Rs coins = 13

No. of 2 Rs coins = 26

Answer 2

x = 13 , y = 26

Let x be rupees 1 coin.

Let y be rupees 2 coin.

Given:

y=2x-------1

Total amount = rupees 65

1x +2y = 65---------2

Substituting y=2x in equation 2

We get,

⇒x + 2 (2x)= 65

⇒x +4x =65

⇒5x =65

⇒x = 13

Now to find y

put x=13 in equation 1

y=2x

⇒ y=2(13)

⇒ y = 26

The number of 1 rupees coin is 13

The number of 2 rupees coin is 26.

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