Zain walks at an average speed of 4km/h for 20 minutes before running for half an hour at a certain average speed. If he travels a total distance of 8 km, calculate his average running speed.
Please solve it ASAP
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Answer:
6.85 km
Step-by-step explanation:
Answer
Speed =6km/h
distance =1km
Time =distance/speed=1/6h
Speed =8km/h
Distance =1km
Time =distance/speed=1/8h
Average speed =Totaldistance/totaltimetaken
=1+1+
6
1
+
8
1
=2+
24
4+3
=2+
24
7
=2×
7
24
=
7
48
=6.85km/h
I hope this answer is helpfull for you
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