8. Meena went to a bank to withdraw Rs. 5000 She asked the cashier to give her Rs. 100 and Rx 200 notes only. She got 30 notes in all, find how many notes of Rs. 100 & Rs. 200 she received
Answers
Answer:
"let us consider
number of Rs 50 notes = x and
number of Rs 100 notes = y
Total number of notes she got = 25 notes
Hence,
Number of Rs 50 notes + Number of Rs 100 notes = 25
⇒ x + y = 25 … (1)
Total money Meena has = 50x + 100y
Total money given = Rs 2000
So,
50x + 100y = 2000
On further calculation, we get,
⇒ x + 2y = 40 …. (2)
On subtracting equation (1) and (2), we get,
-y = -15
y = 15 notes
putting y = 15 in equation (1)
x + y = 25
x + 15 = 25
x = 25 – 15
x = 10 notes
Therefore,
Rs 50 = 10 notes and Rs 100 = 15 notes "
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.