Question

A bookseller sells two types of books, mathematics and physics. at the end of the day, he had 12 more of mathematics than physics left, if the total books sold for the day is 84. how many did he have for physics?

Answer 1

`36`

Explanation:

Suppose, Physics`=x`

Math`=x+12`

`x+x+12=84`

or,`2x=84-12`

or.`2x=72`

or, `x=36`