Question

A velocity of 20km/h is represented by an arrow of length 5cm . What velocity is represented by an arrow of length 7.5 cm

Answer 1

The velocity represented by an arrow of length 7.5 is 30km/h.

Answer 2

"A velocity of $20 \frac { km }{ hr }$ is represented by an arrow of length 5 cm. The velocity represented by an arrow of length 7.5 cm is $30 \frac { km }{ hr }$.

Given:

Velocity given by the arrow is $20 \frac { km }{ hr }$

Length of the arrow is 5 cm

Solution:

$20\quad km/hr\quad \left( Velocity \right) \quad =\quad 5\quad cm\quad \left( Length \right)$

Then calculate the velocity given by the arrow of length 7.5 cm

$\Longrightarrow Velocity\quad =\quad \frac { 20 }{ 5 } \quad \times \quad 7.5Velocity\quad =\quad 30\quad \frac { km }{ hr }$ "