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11 May, 05:02

A deep sea diving bell is being lowered at a constant rate. After 10 minutes, the bell is at a depth of 600 ft. After 40 minutes the bell is at a depth of 1 comma 700 ft. What is the average rate of lowering per minute? Round to the nearest hundredth.

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  1. 11 May, 07:05
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    Average rate of lowering per minute = 36.67 ft/min

    Step-by-step explanation:

    After 10 minutes, the bell is at a depth of 600 ft

    After 10 minutes

    Depth of bell = 600 ft

    After 40 minutes the bell is at a depth of 1,700 ft.

    After 40 minutes

    Depth of bell = 1700 ft

    Time gap = 40 - 10 = 30 minutes

    Depth fallen = 1700 - 600 = 1100 ft

    We have

    Depth fallen = Average rate of lowering per minute x Time gap

    1100 = Average rate of lowering per minute x 30

    Average rate of lowering per minute = 36.67 ft/min
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