A man rides his bicycle 10 km at an average speed of 12 km/hr and again travels 12 km at an average speed of 10 km/hr. What is his average speed for the entire trip approximately? Choose the correct choice: A) 10.9 B) 10.2 C) 10.7 D) 10.8 E) 10.1
Total distance travelled = 10 + 12= 
<gadget id="calculator">10 + 12</gadget>
<output>22</output>
22 kmTime taken to travel 10 km at an average speed of 12 km/hr= distancespeed=1012 hrTime taken to travel 12 km at an average speed of 10 km/hr = distancespeed=1210 hrTotal time taken =1012+1210 hrAverage speed = distancetime=22(1012+1210)=22×120(10×10)+(12×12)22×120244=11×120122=11×6061=66061=10.8 kmph   Answer :10.8
<result>D</result>
A man rides his bicycle 10 km at an average speed of 12 km/hr and again travels 12 km at an average speed of 10 km/hr. What is his average speed for the entire trip approximately?