Question

Tom is an $x$-year-old boy. Determine Dennis's age in terms of Tom's age if he is four years younger.

• A. $x$
• B. $x-4$
• C. $x+4$
• D. $4x$

Answer 1

The correct option is B $x-4$

$\underset{–}{\text{Given:}}$
$\bullet$ Tom's age $=x$ years
$\bullet$ Dennis is four years younger than Tom.

$\underset{–}{\text{Need to Find:}}$
Dannis's age in terms of Tom's age

$\therefore$ Dennis's age $=$ Tom's age $-4$ years
$=(x-4)$ years

As a result, Dannis's age in terms of Tom's age is $\underset{–}{(x-4)}$ years.

Therefore, option (b.) is the correct answer.