Question

"The Speed of a car (s) is 7 more than half of the distance(d) it traveled in an hour."
From the above statement, the correct equation representing the relationship is -

• A. $s=2d-7$
• B. $2s=d+7$
• C. $s=\frac{d}{2}-7$
• D. $s=\frac{d}{2}+7$

Answer 1

The correct option is D $s=\frac{d}{2}+7$

The relation between the speed and the distance is given as:
$Speedofcar\left(s\right)is7morethanhalfthedistance\left(d\right)$
which can be written as:
$\Rightarrow speed=\frac{distance}{2}+7$

∴You can write,
$s=\frac{d}{2}+7$