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15 November, 05:14

If D varies directly with t and D is 105 when t is 3, find D when t is 8.

a. 35

b. 280

c. 840

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Answers (1)
  1. 15 November, 05:42
    0
    First you have to find what D/t is

    1) 105/3 = 35

    2) 35*8 = 280

    So the answer is B. 280
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