x Your civil engineering firm has been contracted to lay water pipes for two str

Question

x

Your civil engineering firm has been contracted to lay water pipes for two streets in a new neighborhood. The pipes (that will connect to the city's main intersection) must be able to provide 2230 gallons of water per minute to the new homes being built.

The design calls for two safety valves that are each known to leak 0.70% of the water passing through them.

How many gallons per minute must the water department provide at the main intersection (before entering your two pipes)? (Keep one decimal place in your answer)

Explanation / Answer

water department should supply the water for pipe 1 and pipe 2

due to safety valves it incurs 0.70% of water passing through each pipe

so water department should supply 2230+(0.70/100)x2230 =2245.61 gallons of water for each pipe

then total water supplied by water department is 2x2245.61=4491.22 gallons of water

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