Question

Meena went to a bank to withdraw 7 2000. She asked the cashier to give her
750 and ? 100 notes only. Meena got 25 notes in all. Find how many notes of
750 and 7 100 she received.​

Answer 1

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

50 and 100 she received.

⟶ Let the Rs.50 notes by x and Rs.100 notes be y.

∴ Total notes =(x+y) note

Total notes (given) =25 notes

∴(x+y)=25⟶(i)

Total money Meena has=50x+100y

Total money (given) =Rs.2000

On simplification, 

x+2y=40⟶(ii)

On substraction (i) and (ii),

−y=−15

y=15 notes

putting y in (i)

x+y=25

x=10 notes

∴ Rs.50 notes=10 notes.

 Rs.100 notes=15 notes. 

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