Question

A sum of 500 is in the form of denominations of 5 and 10. If the total number of notes is
90, find the number of notes of each type.
Sumitra has 34 in 50-paise and 25-paise coins. If the number of 25-paise coins is twice
11.11​

Answer 1

Step-by-step explanation:

Let no. of notes of 5 = x

no. of notes of 10 = 90-x

ATQ

5(x)+10(90-x)=500

5x+900-10x=500

5x-10x=500-900

-5x=-400

x=400/5

=> x=80

=> no. of notes of 5 = 80

=> no. of notes of 10 = 90-80=10