Question

Hundred rupees changed to 5 rupee and 20 rupees if there are 11 notes how many 20 notes did have

Answer 1

Answer:

2

Step-by-step explanation:

Answer 2

Answer:

8 notes of 5 rupees.

3 notes of 20 rupees

Step-by-step explanation:

the total amount of sum is 100.

5*x+20*y=100.

and total no. of notes are 11.

so, x+y=11.

x is the number of 5 rupees note

y is the no. of 20 rupees note

from above two equations

x=11-y

put value of x in eq first

5*(11-y)+20y=100

55-5y+20y=100

15y=100-55

15y=45

y=3

if we y=3 in eq third

then x=11-3

x=8

x=8

y=3

HENCE PROVED