Question

Meena went bank to withdraw Rs 2000. She asked the cashier to give her Rs 50 and Rs 100 notes only. Meena got 25 notes in all. Find how many notesof Rs 50 and Rs 100 she received

Answer 1

Answer:

Let the number of Rs 50 notes  = x

The number of Rs 100 notes  =y

According to the given information

Meena went to a bank to withdraw Rs 2000

So cost of 50 rupee notes  = 50x

And cost of 100 ruppe notes  = 100 y

Total cost is Rs 2000

So that

50 x + 100 y  = 2000

Divide by 50 we get

X + 2 y = 40               ………(1)

Meena got 25 notes in all so that

X +  y  = 25                ………(2)

X + 2 y = 40               ………(1)

Subtracting equation (1) from (2 we get

-Y = - 15

Y = 15

Plug this value in equation first we get

X + 2*15 =  40

X +  30  = 40

X = 10

Answer 2

Step-by-step explanation:

Given :-

Meena went to a bank to withdraw Rs.2000.

She asked the cashier to give Rs. 50 and Rs. 100 notes only .

Meena got 25 notes in all .

Solution :-

Let the number of Rs 50 notes and Rs 100 notes be x and y.        

According to the question,                  

⇒ x + y = 25 ... (i)                  

⇒ 50x + 100y = 2000 ... (ii)                  

Multiplying equation (i) by 50, we get                  

⇒ 50x + 50y = 1250 ... (iii)                  

Subtracting equation (iii) from equation (ii), we get                  

⇒ 50y = 750                  

⇒ y = 15                  

Putting this value in equation (i), we have

⇒ x = 10  

Hence, Meena has 10 notes of Rs 50 and 15 notes of Rs 100.

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