Question

meena went to a 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 notes of rs 50 and rs 100 she recieved​

Answer 1

Answer:

Step-by-step explanation:

Let the number of 50rs notes be x and 100rs notes be y

so

50x+100y=2000

x+y=25

solve for x and y using substitution

x=10, y=15

Answer 2

GiVen:-

• Meena went to a 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.

To find:-

• Find how many notes of Rs.50 and Rs.100 she recieved.

Solution:-

• Let's the number of Rs. 50 notes = x
• Let's the number of Rs. 100 notes = y

★ According to Question:-

Total notes = 25

Therefore,

→ x + y = 25 ...(i)

Total Amount only in Rs. 50 notes = 50x

Total Amount only in Rs. 100 notes = 100y

Therefore,

→ 50x + 100y = 2000 ...(ii)

Now, Multiplying eq(i) by 50, we get

→ (50)x + (50)y = (50)25

→ 50x + 50y = 1250 ...(iii)

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

→ 50y = 750

→ y = 750/50

⟹ y = 15

Putting value of y in eq(i),

→ x + 15 = 25

→ x = 25 - 15

⟹ x = 10

Hence,

Number of Rs. 50 notes = 10

Number of Rs. 100 notes = 15

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