Question

a sum of rupees 800 is in form of denominations of Rs 10 and Rs 20 if the total number of notes be 50 find the number of notes of each type​

Answer 1

Answer:Rs. 10 notes= 20 notes

Rs. 20 notes=30 notes

Step-by-step explanation:

Answer 2

Answer:

20 notes of 10 rupees and 30 notes of 20 rupees

Step-by-step explanation:

total sum of money =800

denominations =10 and 20

total no of the notes =50

let the no. of 10 rupee notes be=x

and let the no. of 20 rupee note be =y

so the two equations will be as follows-

10x+20y=800

and

x+y=50

so substituting value of x from equation 2 to 1 we get

x=50-y

and so

10(50-y)+20y=800

500-10y+20y=800

10y=800-500

10y=300

y=300/10

y=30

so we can get x value by substituting y value in equation3

x=50-y

x=50-30

that is x=20

hence the no. of 10 rupees note is 20 and 20 rupees note is 30.