I have a test that I need to answer in half an hour
Extracted text: Example 8: A 30-cm well completely penetrates an unconfined aquifer of saturated depth 40 m. After a long period of pumping at a steady rate of 1500 Lpm, the drawdown in two observation wells 25 and 75 m from the pumping well were found to be 3.5 and 2.0 m, respectively. Determine the transmissivity of the aquifer. What is the drawdown at the pumping well?