Milla and Luka are 3 kilometers apart and walking toward each other. Milla's average speed is 5 kilometers per hour while Luka's is 4 kilometers per hour. Which equation of the equation below can be used to find t, the time it takes for Milla and Luka to meet? A. 5t + 4t = 1 B. 5t + 4t = 3 C. 5t - 4t = 0 D. 5t - 4t = 3

Question

Mathematics

Lukas Lee

31 December, 21:42

Milla and Luka are 3 kilometers apart and walking toward each other. Milla's average speed is 5 kilometers per hour while Luka's is 4 kilometers per hour. Which equation of the equation below can be used to find t, the time it takes for Milla and Luka to meet? A. 5t + 4t = 1 B. 5t + 4t = 3 C. 5t - 4t = 0 D. 5t - 4t = 3

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Siena Khan · Answer 1

The distance run, x, is equal to velocity, v, times the time, t: x = v * t = > Distance run by Milla = 5 km/h * t Distance run by Luka = 4 km/h * t When they meet each other the total distance run by the two together will be 3 km = > 5t + 4t = 3 Km. Then, the answer is the option B. 5t + 4t = 3.