Question

A sum of Rs. 500 in the form of denomination of Rs.5 and Rs.10.if the tolal number of notes is 90,find the number of notes of each type

Answer 1

Answer:

let Rs.5 be x

and Rs.10 be y

A.T.Q

x+y=90 ---(1)

5x+10y=500 ---(2)

multiplying (1) by 5

we get,

5x+5y=450 ---(3)

solving (2) and (3)

we get,

y=10

putting y=10 in (1)

we get,

x=80

thus there are 80 notes of Rs.5 and 10 notes are of Rs.10