Question

A motorist travels a distance of 40 km during a 7 hour period. What was the average

speed? Round to nearest tenth.

Answer 1

• 
  `5.7 \ km \ hr^(-1)`

Step-by-step explanation:

To find:-

• The average speed.

Answer:-

We are here given that, a motorist travels 40km in 7hrs . And we are interested in finding out the average speed of the motorist . We can find the average speed as ,

Average speed:-

• It is defined as the total distance travelled divided by total time taken.

Mathematically,

`\longrightarrow \boxed{\rm v_(average)=(Distance_(Total))/(Time_(Total ))} \\`

Here the total distance is 40km and the total time taken is 7hrs . So on substituting the respective values, we have;

`\longrightarrow v_(average)=(40\ km)/(7\ hr) \\`

Simplify,

`\longrightarrow v_(average)= 5.714 \ km \ hr^(-1) \\`

Rounding off to nearest tenth,

`\longrightarrow \boxed{\boldsymbol{ v_(avg)= 5.7 \ km\ hr^(-1)}}\\`

Hence the average speed of the motorist to the nearest tenth is 5.7 km hr-¹ .

Answer 2

The average speed of the motorist was 5.7 kilometers per hour, rounded to the nearest tenth.

Step-by-step explanation:

The average speed of the motorist can be calculated by dividing the distance traveled by the time taken.

`\boxed{\sf Speed = (Distance)/(Time)}`

For this problem, the distance traveled is 40 km and the time taken is 7 hours.

Substitute these values into the formula:

`\implies \sf Average\;speed = (40\;km)/(7\;hours)`

This simplifies to:

`\implies \sf Average\;speed = 5.7\;km/h\;(nearest\;tenth)`

Therefore, the average speed of the motorist was 5.7 kilometers per hour, rounded to the nearest tenth.