Question

A sum of ₹800 is of the form of denomination of ₹10 and ₹20 . If the total number of notes be 50 . find the number of notes of each type .​

Answer 1

Answer:

the answer is: the number of notes of Rs10 is 20 and Rs 20 is 30

Step-by-step explanation:

let the numbers of Rs 10 notes be x and Rs 20 be y

10x+20y=800 ......... (I)

x+y=50 ...... (II)

multiply (I) by 10 we get

10x+10y=500 .... (III)

subtract (III) from (I) we get

10y=300

y=30

x=20

the number of notes of Rs10 is 20 and Rs 20 is 30