Answer: 10 Rs.50 notes. ; 15 Rs.100 notes
Explanation:
Let the number of RS 50 notes received be x
Let the number of RS 100 notes received be y
Since Meena got 25 notes in total, this means that:
x + y = 25 ...... equation i
Since Meena went to a bank to withdraw Rs. 2000. This means:
50x + 100y = 2000 ...... equation ii
Combining both equations
x + y = 25 ....... i
50x + 100y = 2000 ...... ii
Multiply equation i by 50
Multiply equation ii by 1
50x + 50y = 1250 ...... iii
50x + 100y = 2000 ...... iv
Subtract equation iii from iv
50y = 750
y = 750/50
y = 15.
Therefore, since x + y = 25
x + 15 = 25
x = 25 - 15
x = 10
The number of Rs.50 notes received is 10
The number of Rs.100 notes received is 15.
