4. Mr. Amit can walk 8 km in 1 hour 20 minutes.
(a) How far does he go in :
(i) 10 minutes?
(ii) 30 seconds?
(b) How long will it take him to walk :
(i) 2500 m?
(ii) 6.5 km?
Answers
Answered by
12
Step-by-step explanation:
Amit walks 8 km in 1 hour 20 min
Or 1.1/3 = 4/3 hours
∴ Speed = Distance/Time
= 8/(4/3) = (8 × 3)/4 = 6 km/h
(a) (i) Distance covered in 10 minutes
= (6 × 1000 × 10)/ 60 = 1000 m = 1 km
(ii) Distance covered in 30 seconds
= (6 × 1000 × 30)/(60 × 60) = 50 m
(b) (i) Time taken in 2500 m = 2500/(1000 × 6)
= 5/12 hours = 5/12 × 60 = 25 minutes
(ii) Time taken in 6.5 km
= 6.5/6 = 65/60 hours
= 1 hours 5 minutes
Answered by
0
Answer:
0.5km= 50m
Step-by-step explanation:
(6×1000×30)
__________. = 50m
60×60
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