Question

1 book cost RS.6 so how many books 18RS.​

Answer 1

3 books

as 18/6=3

this is correct answer

Answer 2

$\huge\red{Answer}$

So let the book of 18rs be x,

=> Rs6:18Rs.: 1book : xbooks

=>(multiplication of 6 to x) and (18 to 1)

=>6x = 18

=>x=18/6

=>x=3