Question

A diver was collecting water samples from a lake. He collected a sample at every interval of 3 m, starting at 5 m below the water surface. The final sample was collected at a depth of 35 m. How many samples did he collect?
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the answer should be 11.​

Answer 1

Answer:

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Answer 2

Answer:

11 samples

Step-by-step explanation:

Depth covered on calculating = 35m - 5 m = 30 m

No. of samples =

$( \frac{30}{3} ) + 1 \\ = 10 + 1 \\ = 11$

1 is added because he has also recorded one sample at 5m depth.