Question

the car cover 50 km in 1 hour find cover 45 minute ? cover in car

Answer 1

1h = 60 m
then

50/60=x/45
x= (50 × 45)/60
x= 2250 / 60
x = 37.5 km

Answer 2

the following question is in direction proportion.
let x be the distance travelled in km
and y be the time in minutes
1hr=60min

we know that two quantities vary directly if
$\frac{x1}{y1} = \frac{x2}{y2}$
therefore,

$\frac{50}{60} = \frac{y2}{45}$
$y2 = \frac{50 \times 45}{60}$
y2=37.5

it can cover 37.5 km in 45 minutes