Time and Distance Practice Test 4 with solutions

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Question : 6 of 38

Marks: +1, -0

A man on tour travels first 160 km at 64 km/hr and next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is:

71 km/hr
71.11 km/hr
36 km/hr
35.55 km/hr

Solution:

Average speed =

{160+160}/{{160}{64}+{160}/{80}}

=

{320}/{5/2+2}

=

{320 × 2}/{9}

=

{640}/{9}

= 71.11 km/hr

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