A vehicle travels $4 \mathrm{~km}$ with speed of $3 \mathrm{~km} / \mathrm{h}$ and another $4 \mathrm{~km}$ with speed of $5 \mathrm{~km} / \mathrm{h}$, then its average speed is
$3.75 \mathrm{~km} / \mathrm{h}$
$4.25 \mathrm{~km} / \mathrm{h}$
$3.50 \mathrm{~km} / \mathrm{h}$
$4.00 \mathrm{~km} / \mathrm{h}$
Solution
Please login to view the detailed solution steps...
