Ahyllin Ahyllin

24-04-2020
Mathematics

contestada

A car leaves city A, at a speed of 90 km / h. Three hours later another car leaves the same city in search of the first one with a speed of 120 km / h. in which point do they meet?
Select the appropriate answer:
A) 120km
B) 30km
C) 1080km
D) 560 km

Please help! :(

Respuesta :

amna04352 amna04352

28-04-2020

Answer:

C) 1080km

Step-by-step explanation:

Let t be the time after A leaves

Distance covered by A:

90t

Distance covered by B:

120(t - 3)

90t = 120(t - 3)

90t = 120t - 360

30t = 360

t = 12

Distance: 90(12) = 1080

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