Question

Sunny sold five of his comic books and then bought six more. He now has 18 comic books. He had comic books at the begining.

• A. $6$
• B. $17$
• C. $18$

Answer 1

The correct option is B $17$

Let Sunny had $x$ comic books at the start.
He sold five of his comic books
Remaining number of comic books$=x-5$
Given that further he bought six more comic books.
$\therefore$ Now he has $x-5+6$ comic books.

Given that now Tom has $18$ comic books.
$\Rightarrow x-5+6=18\Rightarrow x+1=18$
Subtract $1$ from both sides,
$\Rightarrow x+1-1=18-1$
$\Rightarrow x=17$
Tom had 17 comic books at the start.