Question

a train cover a distance of 72 km in 45min. how long will it take to run 800km​

Answer 1

Time taken to cover 800km

Definition:

A ratio is an ordered pair of numbers while a proportion is an equation in which the ratios are set to each other.

Step-by-step explanation:

Let x be the time taken to cover the distance of 800km,so the given problem is expressed as,

[tex]\frac{72}{45}=\frac{800}{x} \\ 72x=800*45\\ 72x=36,000\\ x=500 minutes[/tex]

Thefore,the time taken to run a distance of 800 km is 500 minutes.

Answer 2

Answer:

A train covers a distance of 72 km in 45min.  8 hr 20 min to take to run 800km​.

Step-by-step explanation:

The unitary method is a method in which you find the value of a unit and then the value of a required number of units.

If   distance = 72 km   then time = 45 min

Then  distance = 800 km then    time = ?

If time is x min

[tex]45 \times 800 = 72 \times x\\ x =\frac{800 \times 45}72} \\ x =\frac{36000}{72} \\ x = 500 min\\ x = 8 hr. 20 min[/tex]

So,  8 hr 20 min to take to run 800km​ distance.