Question

A car X starts at 5pm at a speed of 60km/hr.Another car Y starts from the same point at 6:20pm at a speed of 80km/hr.At what time will X and Y meet each other?

Answer 1

Answer:

10 : 20 pm

Step-by-step explanation:

Hi,

Given that A car X starts at 5pm at a speed of 60km/hr.

Another car Y starts from the same point at 6:20 pm at a speed

of 80km/hr.

For the car X and Y to meet each other, both the cars should

have traveled the same distance,

Let the distance each travel be 'd'

If 't' is the time taken by X to travel d

Then time taken by Y will be t - 4/3 hr

Since, car Y travels 1 hr 20 minutes later

Speed of the car X , Vx = 60 kmph

Speed of the car Y, Vy = 80 kmph

Distance  traveled by X = t*Vx

Distance traveled by Y = (t - 4/3)*Vy

But, t*Vx = (t - 4/3)*Vy

60t = 80(t - 4/3)

20t = 320/3

t = 16/3

= 5 Hr and 20 mins

Hence, So X and Y will meet after 5 Hr and 20 mins past 5 pm

= 10:20 pm

Hope, it helps !

Answer 2

Answer:

same answer of these question