The total number of years in a century is the same as the number of marbles Gideon has. If he gives 3/4 of the marbles to his sister and multiples the number of remaining marbles by 2, he gets his age five years from now. How old is Gideon now?
How many marbles does Gideon have? ** A century has 100 years, and if Gideon has as many marbles as the number of years in a century, he has 100 marbles.
How many marbles does Gideon give to his sister? ** If he gives 3/4 of the marbles to his sister, he gives out 3/4*100 = <<3/4*100=75>>75 marbles.
How many marbles does Gideon have left? ** Gideon's total number of marbles remaining after giving 3/4 of the marbles to his sister is 100-75=<<100-75=25>>25.
How old will Gideon be five years from now? ** When he multiplies the number of remaining marbles by 2, he gets his age five years from now, meaning he will be 25*2=<<25*2=50>>50 years old five years from now.
How old is Gideon now? ** Currently, Gideon is 50-5 = <<50-5=45>>45 years old.
#### 45