Question

Tabita went to a bank to withdraw ₹2000. She asked the cashier to give the cash in ₹50 and ₹100 notes only. Snigdha got 25 notes in all. Can you tell how many notes each of ₹50 and ₹100 she received?

Answer 1

Hi ,

Let the number of Rs50 notes = x ,

Let the number of Rs100 notes = y ,

x + y = 25

x = 25 - y ----( 1 )

50x + 100y = 2000 ---( 2 )

Here , we are using substitution

method .

50( 25 - y ) + 100y = 2000

1250 - 50y + 100y = 2000

50y = 2000 - 1250

50y = 750

y = 750/50

y = 15

Put y = 15 in equation ( 1 ) , we get

x = 25 - 15

x = 10

Therefore ,

Tabita received ten Rs 50 notes and

fifteen Rs 100 notes

I hope this helps you.

: )

Answer 2

Answer:

Step-by-step explanation:

Let the number of Rs50 notes = x ,

Let the number of Rs100 notes = y ,

x + y = 25

x = 25 - y ----( 1 )

50x + 100y = 2000 ---( 2 ). By substitutionmethod 50( 25 - y ) + 100y = 2000

1250 - 50y + 100y = 2000

50y = 2000 - 1250

50y = 750

y = 750/50

y = 15

Put y = 15 in equation ( 1 ) , we get

x = 25 - 15

x = 10

Therefore ,Tabita received ten Rs 50 notes and fifteen Rs.100 notes