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.
Let Meena has received x no. of ₹50 notes and y no. of ₹100 notes. So,
50 x + 100 y = 2000
x + y = 25
multiply by 50
50x + 100y = 2000
50 x + 50 y = 1250
- - -
50y = 750
y = 15
Putting value of y=15 in equation (2)
x + 15 = 25
x = 10
Meena has received 10 pieces of ₹50 notes and 15 pieces of ₹100 notes
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