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To see better, best to draw model. From here, hope you can find the answer. Ignore the 30 min in the model, it is just what I found when I do the workings. I got 7/6 hrs, which is also 1 1/6hrs.
Date Posted:
2 years ago
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Hi, I provide 1 to 1 tuition. $50/1.5h. You may contact me via WhatsApp at 9033 8810. I am an ex-school teacher :)
Date Posted:
2 years ago