fatimaahaqqi05
contestada

erica drove from ottawa at 80 km/h. kareem left an hour later and drove along the same road at 100 km/h. how far was kareem when he caught up to erica?
please answer this asap!!

Respuesta :

bruhlol12301230no2

Answer:

let us assume that the distance from Ottawa at which they meet each other is 'x' km. Then the time it took For Erika to travel this distance is:

 

t_Erika = x/80

 

kareem started 1 hour after Erika. So the time it took for Kareem to cover that 'x' distance is (including the 1 hour delay time):

 

t_Kareem = 1 + x/100

 

These two times must be equal to each other since they meet at this point of time. Setting them equal and solving for x:

 

t_Erika = t_Kareem

x/80 = 1 + x/100

x/80 - x/100 = 1

5x/400 - 4x/400 = 1

(5x-4x)/400 = 1

x/400 = 1

x = 400 km