Question

please send me full solution as soon as possible and I will mark as BRAINLIEST

Answer 1

let the speed of the first var be x

a/q



5(x)+5(x+5)=425
5x+5x+25=425
10x=425-25
10x=400
x=400/10
x=40

speed of first car= 40km/hr
speed of second car=45km/hr

Answer 2

Let the speed of the 1st car be x.

Then the speed of the other car will be 5 km more than that of the other = x + 5.

Given that distance = 425.

                   Time = 5hrs.

      We know that Time t = distance/rate

                               Then r = distance/time

                                           = 425/5

                                           = 85.


x + x + 5 = 85

2x + 5 = 85

2x = 85 - 5

2x = 80

x = 80/2

x = 40.


The average speed of the 1st car = 40km/hr.

        average speed of the 2nd car = x + 5 = 40 + 5 = 45km/hr.


Hope this helps!