Give me solutions of questions number 4 of page numbers S. 65 of book T. S grewal
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Solution:
Case I: While driving to school
Average speed of Abdul’s trip = 20 km/h
Total distance = Distance travelled to reach school = d
Let total time taken = t1
…(i)
Case II: While returning from school
Total distance = Distance travelled while returning from school = d
Now,total time taken = t2
…(ii)
Where,
Total distance covered in the trip = d + d = 2d
Total time taken, t = Time taken to go to school + Time taken to return to school
= t1 + t2
From equations (i) and (ii),
Solution:
Case I: While driving to school
Average speed of Abdul’s trip = 20 km/h
Total distance = Distance travelled to reach school = d
Let total time taken = t1
…(i)
Case II: While returning from school
Total distance = Distance travelled while returning from school = d
Now,total time taken = t2
…(ii)
Where,
Total distance covered in the trip = d + d = 2d
Total time taken, t = Time taken to go to school + Time taken to return to school
= t1 + t2
From equations (i) and (ii),
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