Question

Babu travels equal distances with speeds of 3 km/hr, 4 km/hr, 5km/hr and takes a total time of 47 minutes. The total distance in km is

• A. 1km
• B. 4km
• C. 3km
• D. 2km

Answer 1

Answer:

C. 3km

Let the equal distances he travels be 'd' and total distance = 3d Total time = 47 minutes = (37/60) hours d/3 +d/4 +d/5 = 47/60 {20d + 15d + 12d}/60 = 47/60 47d = 47 ⇒ d = 1 km ⇒ Total distance = 3 × 1 = 3 km