Answer:
Speed of Car A is 80 km/h and speed of Car B is 60 km/h.
Step-by-step explanation:
let v1 be speed of car A and v2 be speed of car B.
Then According to Question,
If they move in the same direction, then Car A will travel an ( x + 280 ) km while Car B will travel an x km. They both cover this in 14 hr.
using speed distance formula, we get
v1 × 14 = x + 280
v2 × 14 = x
v1 = v2 + 20
.................(1)
Moving towards each other, they'll collectively cover 280 km in 2 hours.
2 × (v1 + v2) = 280
2 × (v2 + 20 + v2) = 280 (from eqn (1))
v2 + v2 + 20 = 140
2 × v2 = 120
v2 = 60
v1 = 60 + 20 = 80
Therefore, Speed of Car A is 80 km/h and speed of Car B is 60 km/h.