Question

azhage bought 7 notebooks of 200 pages and 5 of 100 pages for 407 rupees and Joseph bought 5 notebooks of 200 pages and 7 of 100 pages for 97 rupees what is the price of each kind of notebook?

Answer 1

let x for 200 page notebook
and y for 100 page notebook.
then,
7x+5y=407
5x+7y=97
by adding above
12x+12y=504 => x+y=42
by subtracting the two,
2x-2y=310 => x-y= 155

then after solving the above,
This question seems incorrect.