Question

A man covers a distance at 4 km per hour in 3 hours 30 minutes .Then the time taken to cover the same distance at 21 kilometre per hour is ​

Answer 1

Answer:

54.55

= 4\ 3\{3}{4} = 15

∴ = \{}{} = \{15}{16.5}

= \{15\ 60}{16.5}

= 54.55