Question

12км/мин 40км/мин t=3 s=?

Answer 1

1)V=12км/мин
t=3
S=V•t=12•3=36km


2)V=40км/мин
t=3
S=40•3=120km

Answer 2

It looks like you're asking to calculate a time value given two different speeds (12 km/min and 40 km/min). Let's calculate the time (t) for each speed given a distance of 3 km.

1. For the speed of 12 km/min: Time (t) = Distance / Speed Time (t) = 3 km / 12 km/min

   Converting kilometers to minutes: Time (t) = 3 km / 12 km/min * (60 min / 1 hour) Time (t) ≈ 0.25 hours

   Convert hours to seconds: Time (t) ≈ 0.25 hours * (3600 seconds / 1 hour) Time (t) ≈ 900 seconds

2. For the speed of 40 km/min: Time (t) = Distance / Speed Time (t) = 3 km / 40 km/min

   Converting kilometers to minutes: Time (t) = 3 km / 40 km/min * (60 min / 1 hour) Time (t) ≈ 0.075 hours

   Convert hours to seconds: Time (t) ≈ 0.075 hours * (3600 seconds / 1 hour) Time (t) ≈ 270 seconds

So, for a distance of 3 km:

• At a speed of 12 km/min, it takes approximately 900 seconds (t ≈ 900 seconds).
• At a speed of 40 km/min, it takes approximately 270 seconds (t ≈ 270 seconds).