Question $6$

John receives a perpetuity paying $$2$ at the end of the $3^{rd}$ year, $$4$ at the end of the $5^{th}$ year, $$6$

at the end of the $7^{th}$ year, $$8$ at the end of the $9^{th}$ year, etc.

The present value of this perpetuity at an annual effective interest rate of $$ equals $x$

Calculate $x$

alpha $=10\%$