Question: A construction engineer under your supervision has just poured the concrete foundation for a new building. Your client is eager to see the project completed

A construction engineer under your supervision has just poured the concrete foundation for a
new building. Your client is eager to see the project completed as soon as possible. Under your
conditions, the setting of your concrete is a first order process with a half-life of 12.0 hours.
How long must you wait until 90% of the concrete has set?

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