Question

Meena went to a bank to withdraw rs.2000 she asked the cashier to give her rs.50 and ts.100 notes only.Meena got 25 notes in all find how many notes of rs.50 and rs.100 she received

Answer 1

Answer:

Step-by-step explanation:

Let no. of Rs. 50 notes = x

    no. of Rs. 100 notes = y

Total notes = 25

⇒ x + y = 25

⇒ x = 25-y

total amount only in Rs. 50 notes = 50x

total amount only in Rs. 100 notes = 100y

Total amount = 2000

⇒ 50x + 100y = 2000

⇒50(25-y) + 100y = 2000

⇒50×25 - 50y + 100y = 2000

⇒1250 +50 y = 2000

⇒ 50y = 2000-1250 = 750

⇒ y = 750/50 = 15

    x = 25-15 = 10

No. of Rs. 50 notes = 10

No. of Rs. 100 notes = 15

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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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