Question

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 samples did he collect?

Answer 1

net depth is 30m (35 which is final - 5 which is initial) and he collected at every 3m so 10 (30/3) samples were collected by him.