A car travels with speed 30 km h-l for 30 minutes
and then with speed 40 km h-1 for one hour
Find :
(a) the total distance travelled by the car
(b) the total time of travel, and
(c) the average speed of car
Answers
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Explanation:
a 55km
b 1:30 h
c 7/9 or 0.7
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