Question

23
A sum of Rs 500 is in the form of
denomination of Rs 5 and Rs 10.
If the total number of notes be 75,
find the number of each type of
notes. *
(2 Points)
60, 25
50, 25
20,25
30, 27​

Answer 1

Answer:

50,25

Step-by-step explanation:

Let x be the no. of 5 rupees notes and y be the no. of 10 rupees notes.

According to First condition:

5x+10y=500 -------( 1 )

According to second condition:

x + y =75-----------( 2 )

Multiply equation (2) by 5

5x+ 5y= 375 -----(3)

Substracting equation (3) from (1)

5x+ 10y= 500

- 5x+5y=375

0 + 5y= 125

5y=125

y = 125

5

y= 25

Sutituting y = 25 in eqn (2)

x+ 25 = 75

x= 75-25

x= 50

No. of 5 rupees notes are 50 and 10 rupees notes are 25.