Question

covers distance of 21/4in one hour. How much distance covered in 4/5hour

Answer 1

☆ Given:-
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Distance covered by an object = 21/4

Let its unit be kilometre (km) = 21/4 km

Time taken by an object = 1 hour
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☆ Calculation:-
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Speed of an object = Distance/Time

= (21/4)/1

= (21 * 1)/(4 * 1)

= 21/4 km/h

Distance covered by an object in 4/5 h = Speed * Time

= 21/4 * 4/5

= 84/20

= 42/10

= 21/5 km Ans.
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Ans.) Distance covered in 4/5 h is 21/5 km.