3. lit If a man takes 3 min to walk down a street 258 m long, find his speed in km/h.
(ii) A car covers 300 m in 20 s. Find its speed in km/h.
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Answer:
1 hour = 60 minutes
60÷3 = 20
= 20 × 285 = 5700
It Will cover 5700 m ( 5 km and 700 m) in one hour
Step-by-step explanation:
1 hour = 3600 seconds
3600 ÷ 20 = 180
180 × 300 = 54000
It Will cover 54000 m ( 54 km) in 1 hour
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