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Two cars are traveling on the same road towards each other.  If car A is traveling at a speed of 120 Km/h and car B is traveling 15% slower, how much time will it take the cars to meet if the initial distance between the two is 668.4 Km and car A started to drive one hour and a half before car B started?
  • a)
    one hours and 30 minutes.
  • b)
    two hours.
  • c)
    two hours and 12 minutes.
  • d)
    three hours and 15 minutes.
  • e)
    three hours and 18 minutes.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Two cars are traveling on the same road towards each other. If car A i...
The best answer is C.
Car B is traveling at a speed of 0.85 x 120 = 102 Km/h.
Car A travels alone a distance of 120 x 1.5 = 180 Km. The remaining distance should be divided among the sum of the cars speeds: (668.4 – 180 = 488.4 Km) / (102 + 120) = 2.2 = Two hours and 12 minutes
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Two cars are traveling on the same road towards each other. If car A i...
Problem Analysis:
We are given that car A is traveling at a speed of 120 km/h and car B is traveling 15% slower. The initial distance between the two cars is 668.4 km and car A started to drive one hour and a half before car B. We need to find out how much time it will take for the cars to meet.

Solution:
To solve this problem, we can follow the following steps:

Step 1: Calculate the speed of car B
Since car B is traveling 15% slower than car A, the speed of car B will be:
Speed of car B = Speed of car A - 15% of Speed of car A
Speed of car B = 120 - (15/100) * 120
Speed of car B = 120 - 18
Speed of car B = 102 km/h

Step 2: Calculate the time taken by car A to reach the meeting point
Since car A started driving one hour and a half before car B, the time taken by car A to reach the meeting point will be the same as the time taken by car B to reach the meeting point plus one and a half hours.
Let's assume that the time taken by both cars to reach the meeting point is 't' hours.
Time taken by car A = t + 1.5 hours

Step 3: Calculate the distance covered by car A and car B
Distance covered by car A = Speed of car A * Time taken by car A
Distance covered by car A = 120 * (t + 1.5)
Distance covered by car A = 120t + 180

Distance covered by car B = Speed of car B * Time taken by car B
Distance covered by car B = 102 * t
Distance covered by car B = 102t

Step 4: Set up the equation using the distances covered by car A and car B
Since the total distance between the two cars is 668.4 km, we can set up the equation as follows:
Distance covered by car A + Distance covered by car B = Total distance
120t + 180 + 102t = 668.4
222t + 180 = 668.4
222t = 668.4 - 180
222t = 488.4

Step 5: Solve for 't'
Divide both sides of the equation by 222:
t = 488.4 / 222
t ≈ 2.2 hours

Step 6: Convert the time to hours and minutes
Since the time is given in hours, we can convert it into hours and minutes:
2.2 hours ≈ 2 hours and 12 minutes

Therefore, it will take approximately 2 hours and 12 minutes for the cars to meet. Hence, the correct answer is option C.
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Two cars are traveling on the same road towards each other. If car A is traveling at a speed of 120 Km/h and car B is traveling 15% slower, how much time will it take the cars to meet if the initial distance between the two is 668.4 Km and car A started to drive one hour and a half before car B started?a)one hours and 30 minutes.b)two hours.c)two hours and 12 minutes.d)three hours and 15 minutes.e)three hours and 18 minutes.Correct answer is option 'C'. Can you explain this answer?
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