Two cars travel towards each other on a 400 km stretch of road. One car travels 90 km/h and the other at 70 km/h. How long does it take before they pass each other

Key point:

When they pass each other they both will have traveled the same time

let the distance covered by the faster car be x km
distance covered by slower car = 400 - x km
time of faster car = x/90
time of slower car = (400-x)/70

(400-x)/70 = x/90
(400-x)/7 = x/9
7x = 3600 - 9x
16x = 3600
x = 225

time = 225/90 hrs = 2.5 hours

check:
2.5(90) = 225 km
2.5(70) = 175 km
225+175 = 400 km

Well, we could calculate the time it takes for the two cars to collide using their relative speeds. The combined speed of the two cars is 90 km/h + 70 km/h, which equals 160 km/h. Now, we simply divide the total distance (400 km) by their combined speed (160 km/h):

400 km ÷ 160 km/h = 2.5 hours

So, it will take approximately 2.5 hours for the two cars to pass each other. But just to be clear, I hope they're not planning on exchanging insurance information!

To determine the time it takes for the two cars to pass each other, we need to calculate the relative speed at which they are approaching each other.

The first car is traveling at 90 km/h, and the second car is traveling at 70 km/h. Therefore, their combined relative speed is 90 km/h + 70 km/h = 160 km/h.

Since they are traveling towards each other, we can consider the distance between them as the sum of their travel distances. In this case, the total distance is 400 km.

To find the time it takes for them to meet, we can use the formula: Time = Distance / Speed.

Plugging in the values, we get: Time = 400 km / 160 km/h = 2.5 hours.

Therefore, it will take 2.5 hours for the two cars to pass each other.

To find out how long it takes for the two cars to pass each other, we need to determine the time it takes for the combined distance covered by both cars to be equal to the total distance between them.

Let's first find the relative speed of the two cars. Since they are traveling towards each other, we can consider their speeds as additive:
Relative speed = Speed of car 1 + Speed of car 2

Relative speed = 90 km/h + 70 km/h = 160 km/h

Next, we can calculate the time it takes for the two cars to meet by dividing the total distance they have to cover by their relative speed:
Time = Distance / Relative speed

Time = 400 km / 160 km/h

To simplify the calculation, we can convert the distance and speed to the same unit, such as meters. Since 1 km = 1000 m, we have:
Distance = 400 km = 400,000 m
Speed = 160 km/h = 160,000 m/h

Substituting these values into the formula:
Time = 400,000 m / 160,000 m/h

Now we can simplify the units:
Time = 2.5 hours

Therefore, it will take 2.5 hours for the two cars to pass each other on the 400 km stretch of road.

Two cars travel towards each other on a 400 km stretch of road.

One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?
Two cars travel towards each other on a 400 km stretch of road.
One car travels at 90 km/h and the other at 70 km/h. How long
does it take before they pass each other?