Question

a sum of rupees 500 is in the form of donations of rupees 5 and rupees 10.lf the total number of notes is 90 find the number of notes of each denomination​

Answer 1

letno. of rupee 5be x and so of 10 be y

Answer:

5x+10y=500.e;x+2y=100______i

x+y=90

y=10

and x=80