Question

(ii) A submarine took 12 minutes to climb back to the surface. How far did it climb per minute: mer
8. A scuba diver was collecting water samples from a sea. He collected samples at 5 m intervals starting at 5 m
below the surface. He collected the final sample at a depth of 35 m. How many samples did he collect? 7 ​

Answer 1

Answer:

Number of samples collected =》 Net. depth / Distance between the adjacent symbol.

Net depth =》 Final depth - Initial depth

Net depth =》35 - 5

=》 30m

Number of symbol collected =》 30 / 3

=》 10

Since the man started to collect the samples from 5m deep anything before the 5m should not be counted or considered.

Thus no. of symbols collected is 10.

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