A car covers a total distance of 180 km, divided into three equal parts of 60 km each. In the first part, the car runs at 60 km/h; in the second part, its speed drops to 40 km/h. In the third part, its speed increases again, so that the total average speed for the entire journey becomes 54 km/h. Find the speed of the car in the third part.
Subject: Mathematics | Topic: Arithmetic | Difficulty: MEDIUM
Options
- (A) 72 km/h
- (B) 75 km/h
- (C) 78 km/h
- (D) 90 km/h
Verified Answer
Option (A): 72 km/h
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