Kaveri has a total rs 590 as currency notes is the denominations ofrs50, rs 20, and rs 10. the ratio of the number of rs 50 note and rs 2o is 3:5. if she has a total of 25 notes, how many notes of each denomination she has?

Let

x = number of rs 50

y = number of rs 20

z = number of rs 10

Because there are 25 total notes,

x + y + z = 25 (1)

The ratio of rs 50 to rs 20 is 3:5, therefore

x = 0.6y (2)

The total amount is rs 590, therefore

50x + 20y + 10z = 590

or

5x + 2y + z = 59 (3)

Subtract (1) from (3).

4x + y = 34 (4)

Substitute (2) into (4).

4 * (0.6y) + y = 34

3.4y = 34

y = 10

From (2), obtain

x = 6

From (1), obtain

z = 25 - 6 - 10 = 9

Answer:

Kaveri has

6 rs 50 notes,

10 rs 20 notes,

9 rs 10 notes.