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If a nation's real GDP is growing by 17

Economics May 21, 2021

If a nation's real GDP is growing by 17.5 percent per year, its real GDP will double in approximately

 

Multiple Choice

  • 4 years.
  • 7 years.
  • 35 years.
  • 2 years.

Expert Solution

Computation of Number of Years to Double using Rule of 72:

Number of Years = 72/Annual Growth Rate

= 72/17.5

Number of Years = 4.11 or 4 Years 

 

Or We calculate it using NPER Function in Excel:

=nper(rate,pmt,-pv,fv)

Here,

NPER = Number of Years = ?

Rate = 17.5%

PMT = 0

PV = 1

FV = 2

Substituting the values in formula:

=nper(17.5%,0,-1,2)

NPER or Number of Years = 4.30 or 4 Years 

 

So, the correct option is 1st "4 Years".

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