'What is the total ESALs for design period?

An engineer is designing a two-lane rural roadway that has a traffic growth rate of 4%. The design period is 10 years and the annual equivalent 80 kN single axle load (ESALs) is 8,000 (mostly cars). It is known that 6 years later, suburban sprawl will cause the traffic growth rate to increase to 12%. What is the total ESALs for the design period?

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