Mathaddict100's answer to rainie's Secondary 4 E Maths Singapore question.
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Hi. This is just another method you can use. Purely, numerical calculation. Algebra not required. However, if you are more familiar with algebra and prefer it, I suggest you to go with the solution given by another tutor. You may use my method as a reference. Thanks. :)
Date Posted:
2 years ago
If you're asking how I get 41/9 h as the total time, I divided the the distances by their speed at each points and adding them up. This gives me 41/9 h. Finally, I divide total distance by total time to get the average speed.
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