Question

The speed of car A is two times of car B's speed. If car A covers a distance of 154 kilometers in 2 hours and 45 minutes then find the speed of the car B.

• A. 42 ​km/hr
• B. 28 km/hr
• C. 27 km/hr
• D. 21 km/hr

Answer 1

Answer:

B. 28 km/hr

Time taken by car A to travel 154 km = 2 hrs 45 min ⇒ 2 hrs + (45/60) hrs ⇒ 2 hrs + (3/4) hrs ⇒ 11/4 hrs Speed of car A = Distance/Time ⇒ 154/(11/4) ⇒ 14 × 4 ⇒ 56 km/hr The speed of car B = (Speed of car A)/2 ⇒ 56/2 ⇒ 28 km/hr