Your school is it upon 10 km away from her house Daily she walks the distance and then take a bus to travel one upon 2 km to reach the school how far does she work done
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Solution
Your question is not fully clear,you mentioned upon 10 km it is not making any sense
she has to do work only when she is walking
The work done by the student = Total distance of school from the house - distance travelled by bus
Distance travelled by bus = 1/2 km
Total distance you did not mention clearly i am taking it 10 km if some other value is there than substitute that value
You will get answer as (10-1/2) = 19/2 km = 9.5 km