Question

Supposed that Anushka had X notes of rupees 10 and Y notes of rupees 50 each Anushka got rupees 2500 from Anand as denominations mentioned above therefore equation 1 is equal to? If an Anand would have given her the amount by interchanging number of notes Anushka would have received rupees 500 less than the previous amount therefore equation second is equal to?

Answer 1

Anushka has X notes of rs.10
and she has Y notes of rs.50
total amount given to her by Anand= rs.2500
the equation is-
10X+50Y=2500
or, X+5Y=250

For the second part,
now anushka has X notes of rs.50 and Y notes of rs.10
total money given= rs.2500-rs.500= rs.2000
the equation is-
50X+10Y= 2000
or, 5X+Y=200

Hope this helped!