Question 737194
50 + 10 + 2 + ... = S


S = a/(1-r)


S = 50/(1-1/5)


S = 50/(4/5)


S = 50*(5/4)


S = 250/4


S = 125/2


S = <font color="red">62.5</font>


50 + 10 + 2 + ... = S


50 + 10 + 2 + ... = <font color="red">62.5</font>