Question

a sum of rs 800 is in form of denomination of rs 10 and rs 20. if the total number of notes to be 50 find the number of notes of each type​

Answer 1

Answer:

No. of notes of Rs.10 is 20 and no. of notes of Rs.20 is 30

Step-by-step explanation:

let x be the no. of notes of Rs.10

We are given that the total number of notes be 50

So, no. of notes of Rs.20 = 50-x

Value of x notes of Rs.10 = 10x

Values of (50-x) notes of Rs.20 = 20(50-x)

Now we are given that the total sum of money is Rs.800

So, 10x+20(50-x) =80010x+20(50−x)=800

10x+1000-20x =80010x+1000−20x=800

1000-10x =8001000−10x=800

200=10x200=10x

x=20x=20

So, no. of notes of Rs.10 is 20

No. of notes of Rs. 20 = 50-x =50-20 = 30

Hence no. of notes of Rs.10 is 20 and no. of notes of Rs.20 is 30