Question

two cars start from the same place at the same time but in opposite direction their speed are 80 km per hour after how long they be 580 km apart​

Answer 1

Step-by-step explanation:

We are given that two cars start from the same place at the same time but in opposite directions their speeds 80 km/hr and 65 km/hr.

We have to find after how long will they be 580 km apart.

As we know that the Speed, Distance and Time formula is given by;

           Time = distance/speed      

Here, the speed will be the relative speed because the two cars move in opposite directions.

So, the relative speed = Speed of first car + Speed of second car

                                    = 80 km/hr + 65 km/hr = 145 km/hr

Now, the time they will be 580 km apart =   = 4 hr.

Hence, the two cars will be 580 km apart after 4 hours.

Answer 2

Answer:

3.625 Hours or 217 Minutes 30 Seconds or 13050 Seconds

Step-by-step explanation:

Distance Covered By Each Car Should be = 290km

Distance = Speed * Time

Let Time Be x

So,

290 = 80 * x

x = 290/80

x = 3.625 Hours

   = 217 Minutes 30 Seconds

   = 13050 Seconds