A traffic survey revealed the present average daily traffic of commercial vehicles as 1000. The annual rate of growth of traffic is found to be 8 percent. The pavement construction is to be completed in three years after the last traffic count. Then the number of vehicles for design of rigid pavements will be taken as -

- 1
  
  $1000 {(1.08)}^{13}$
- 2
  
  $1000 {(1.08)}^{23}$
- 3
  
  $1000 {(0.92)}^{13}$
- 4
  
  $1000 {(1.08)}^{3}$

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