A diver was collecting water samples from a lake. He collected a sample at every interval of 3m, starting at 5 m below the water surface. The final sample was collected at a depth of 35 m. How many symbols did he collect?
Answers
first he take sample from 5m below at last from 35m depth so total distance of tested= 35-5 = 30 at every 3m he took sample so no. of times he collect sample= 30/3+1 = 10 + 1 = 11 because for 5th metre we have take one sample and starts taking the sample. #hope it helps #mark as brainliest
Given : A diver collecting sample from a lake
Samples being collected at interval of 3 m starting at 5 m below the water surface
Final sample collected at 35 m
To Find : How many samples collected
Solution:
1st sample collected at 5 m
2nd sample collected at 5 + 3*1 m
3rd sample collected at 5 + 3*2 m
Hence nth sample collected = 5 + 3*(n -1 ) m
5 + 3*(n -1 ) = 35
=> n - 1 = 10
=> n = 11
Hence 11 samples collected
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