Question

Q3b. A lorry travels 200 km at an average speed of 25 km/h.<br />Work out how long the journey lasts?​

Answer 1

Answer:

don't know

Step-by-step explanation:

don't know I can't understand

Answer 2

Given:

A lorry travels 200 km at an average speed of 25 km/h.

To find:

How long the journey lasts?​

Solution:

The distance travelled by lorry, D = 200 km

The average speed of the lorry, S = 25 km/hr

Let "T" hour be the time taken by the lorry to complete the entire journey.

We know the formula of the average speed is as follows:

$\boxed{\bold{Average \:Speed = \frac{Total \:Distance}{Time \:taken} }}$

Now,

By using the above formula and substituting the given values of speed and distance, we get

$25 = \frac{200}{T}$

$\implies T = \frac{200}{25}$

$\implies \bold{T = 8\:hr}$

Thus, the journey of the lorry lasts for 8 hours.

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