If 20 men can dig a tank 30 meters long, 20 meters wide, and 12 meters deep in 25 days working 8 hours a day, how long will it take to dig three tanks each 90 meters long, 25 meters wide, and 20 meters deep using 80 men working 9 hours a day?
Added by Marcos N.
Step 1
The volume \( V_1 \) of the first tank is given by: \[ V_1 = \text{length} \times \text{width} \times \text{depth} = 30 \, \text{m} \times 20 \, \text{m} \times 12 \, \text{m} = 7200 \, \text{m}^3 \] Show more…
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