Question

A man travel 2560 km in which aome part of the journey he travel by aeroplane, some by ship and rest by car. Ratio of timw taken by man was 1:4:5 respectively. Ratio of their avg speed was 20:1:8. If avg speed during whole journey was 64km/hr. Find avg speed of ship

Answer 1

Step-by-step explanation:

Given A man travelled 2560 km in which some part of the journey he travelled by aeroplane, some by ship and rest by car. Ratio of time taken by man was 1:4:5 respectively. Ratio of their avg speed was 20:1:8. If avg speed during whole journey was 64 km/hr. Find avg speed of ship

• Given  
•        Total distance travelled = 2560 km
•           So Distance = Time x Speed
•        Ratio of time spent = 1 : 4 : 5
•        Ratio of speed = 20 : 1 : 8
•   Therefore Ratio of time x speed
•                     = 20 x 1 : 4 x 1 : 5 x 8
•                     = 20 : 4 : 40
•  Now sum of the ratios will be
•                      = 20 + 4 + 40
•                      = 64
• Therefore Distance covered by ship will be
•                        = 2560 x 4 / 64
•                        = 160 kms

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