Question

a car trvel 90 km in 2hr and 30min how much time is required to cover 30 km with the same speed

Answer 1

Speed = Distance/ time
= 90/2.5 km/hr
= 36 km/hr

Now, Time= Distance/ Speed
= 30/36
=0.833333333 hr
= 50 minutes Approx.

Answer 2

hiii!!!

here's ur answer...

it is in direct proportion as the speed is constant so the distance will increase time will be increase and if distance will decrease time will also decrease.

$in \: direct \: proportion \: \frac{x1}{y1} = \frac{x2}{y2} \\ \\ distance = x1 \\ \\ time = y1 \\ \\ 2 \: hours \: 30 \: mins \: can \: be \: written \: as \: \\ 2.5 \: hours \\ \\ \frac{90}{2.5} = \frac{30}{y2} \\ \\ 36 = \frac{30}{y2} \\ \\ y2 = \frac{36}{30} \\ \\ y2 = 1.2 \\ \\ hence \: it \: will \: take \: 1.2 \: hours \: to \: \\ travel \: 30km. \\ \\ 1.2 \: hours \: is \: 72mins \: therefore \: \\ in \: hours \:and \: minutes \: is \: 1 \: hour \: \\ 12 \: mins \\ \\ hope \: this \: helps \: u....$

<<<<<<<☺☺☺>>>>>>>