Question

Riya covers a certain distance by driving her car at the speed of 90 km/h in 5 h. At what speed should she drive if she wants to cover the same distance in 4 h 10 minutes?​

Answer 1

$\tt\Huge{\underline{\underline{\color{magenta} {Solution}}}}$

Distance=Speed×Time

When speed is 90 $\sf km \:per\: hour$

Distance traveled by car =90×5

=450 km

When Time is 4hr 10 min

=0.166+4=4.166hr

Speed to complete the journey =$\sf \dfrac {distance}{time}$

$\sf\to \dfrac {450}{4.166}$

$\sf\to{\underline {\boxed{\purple{108.01728}}}}$