Time and Distance Practice Test 3 with solutions

Question : 26 of 40

Marks: +1, -0

A man travels 500 km by bus at a speed of 50 km/hr, 1,800 km by ship at 30 km/hr, 2,700 km at 450 km/hr by plane. His average speed for the entire journey is:

$65 {17}/{19}$ km/hr
$66 {17}/{21}$ km/hr
$67 {13}/{17}$ km/hr
$65 {15}/{19}$ km/hr
$63 1/3$ km/hr

Validate

Solution:

Total distance covered = 500 + 1,800 + 2,700 = 5,000 km
Total time taken =

{500}/{50}+{1800}/{30}+{2700}/{450}

= 10 + 60 + 6 = 76
Average speed =

{5000}/{76}

65 {15}/{19}

km/hour.

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