29 Meena went to a bank to withdraw Rs.2,000. 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 received
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Answer:
Let the Rs.50 notes by x and Rs.100 notes be y.
∴ Total notes =(x+y) notes
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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