Question

a car running at 45 km per hour takes 6 hours to cover a journey at what speed must he travel to complete the journey in 5 hours​

Answer 1

Answer:

$a \: car \: covered \: a \: distance \: in \: a \: 6 \: hours \:$

$at \: the \: speed \: of \: 45 \: km(h)$

$so \: firstly \: we \: find \: the \: distance \\ travel \: in \: a \: one \: hour \: \:$

$\frac{45}{6} = 7.5 \: km \: in \: a \: hour \:$

$now \: 7.5 \times 5 = 37.5$

Answer 2

Answer: 54 km./h

Step-by-step explanation:

Given speed =45 km/h

and time = 6 hours

Distance = speed × time

= 45 ×6 = 270 km.

we have to cover this distance in 5 hours...

Distance = 270 km. ,time = 5 h

Speed = Distance / time =270/5

=54 km./h