. Aruna has only Re1 and Rs 2 coins with her


If the total number of coins that she has is 50 and the amount of money with her is Rs. 75 , then the number of Re. 1 and Rs. 2 coins are respectively

A: 35 and 15

B: 35 and 20

C: 15 and 35

D: 25 and 25

 

Best Answer

Explanation:-

Given, 

Aruna has Rs. 1 and Rs. 2 coins with her.

We have to find the number of Re.1 and Rs.2 coins.

Let the number of Re.1 coins be x

Let the number of Rs.2 coins be y.

Given,

 x + y = 50 ------------- (1)

Given, the amount of money is Rs. 75

So, x + 2y = 75 --------------- (2)

On solving the linear equations (1) and (2),

First subtracting (2) and (1),

subtracting

By grouping,

subtracting

Therefore, the number of Rs.1 and Rs.2 coins are 25 and 25.

Final answer:-

Hence ,the correct option is (D).Therefore, the number of Rs.1 and Rs.2 coins are 25 and 25.

 

 

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