Question

WILL GIVE BRAINLIEST!!!
Warning: If you do not meet the requirements which I have listed below, I will report you.
1. Give the right answer
2. Do not say, "I don't think any of them work"
3. GIve a clear and concise explanation (no skipping steps)
4. Explain what you are doing and why you are doing it.
(Attached below is a photo of the equation)

Answer 1

Without using general formula we will solve it in bit lengthy manner

For first half

Time=Distance/Speed

• 340/272
• 1.25h

For second half

Time

• 1000/(228+272)
• 1000/500
• 2h

So

Average speed

• Total distance/Total time
• (1000+340)/(2+1.25)
• 1340/3.25
• 412.3km/h

Option C

Answer 2

The answer is 412.3 km/h.

The formula to find average velocity is :

$\boxed {V_{avg} = \frac{d_{1}+d_{2}}{t_{1}+t_{2}}}$

Let's find t₁ and t₂.

• t₁ (from London to Paris) : 340/272 = 85/68 = 5/4 hours
• t₂ (from Paris to Barcelona) : 1000/500 = 2 hours

Now, let's substitute in the formula to get the answer.

• v (avg) = [(1000 + 340) / (5/4 + 2)]
• v (avg) = 1340/ (13/4)
• v (avg) = 5360/13
• v (avg) = 412.3 km/h