Question

In a bag there are some rupees 5 and rupees 10 if there are 40 notes in all and in amounting it is rupees 300 then find each type of notes​

Answer 1

Answer:

I'm representting ₹5 with x and ₹10 with y

Now,

x+y=40

=> x= 40-y

5x+10y=300

=>x+2y=60

=>40-y+2y=60

=>40+y=60

=>y=60-40

=y = 20

x= 40-y

=40-20

= 20

Therefore, there were 20 10 rupee notes and 20 5 rupee notes