Question

If it takes $2$ hours to cover a distance at $2$ km/h, then at what speed it should travel to cover the same distance in $1$ hr?

• A. $4$
• B. $8$
• C. $5$
• D. $6$

Answer 1

Answer: (A)

$4$

A distance is covered in $2$ hours at a speed of $2$km/hr

$\therefore$ the same distance to be covered in $1$hr is $x$ km/hr

$\therefore$ By inverse proportion,

$2\times 2=1\times x$

$\therefore x=4$

Answer is $4$ km/hr