The answer is 7:17 because when you add them together it equals 7:17.
Answer:
-5.65685424949
Step-by-step explanation:
<em>Answer:</em>
<em>B</em>
<em>C</em>
<em>F</em>
<em>Step-by-step explanation:</em>
<em>6/7</em>
<em>12/17</em>
<em>6/25</em>
<em>Best,</em>
<em>SunflowerJada</em>
The distance, s = 40t₁ where t₁ is the time to complete the outward journey.
The same distance = vt₂ where t₂ is the time to complete the return journey at speed v.
For the whole journey, 2s=60(t₁+t₂). Therefore s=30(t₁+t₂)=40t₁=vt₂.
30t₁+30t₂=40t₁, 10t₁=30t₂, t₁=3t₂, so s=120t₂=vt₂ and v=120kph.
