Question 1196797
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Please define what you mean by "few". That term is a bit vague. In some situations, it could mean 3. But perhaps the author intends some other number instead. 


Edit: Here are two possible scenarios
<table border = "1" cellpadding = "5"><tr><td></td><td>Alex</td><td>Grandpa</td><td>Ratio</td></tr><tr><td>This year</td><td>12</td><td>72</td><td>72/12 = 6</td></tr><tr><td>3 years from now</td><td>15</td><td>75</td><td>75/15 = 5</td></tr><tr><td>8 years from now</td><td>20</td><td>80</td><td>80/20 = 4</td></tr></table>
and
<table border = "1" cellpadding = "5"><tr><td></td><td>Alex</td><td>Grandpa</td><td>Ratio</td></tr><tr><td>This year</td><td>24</td><td>144</td><td>144/24 = 6</td></tr><tr><td>6 years from now</td><td>30</td><td>150</td><td>150/30 = 5</td></tr><tr><td>16 years from now</td><td>40</td><td>160</td><td>160/40 = 4</td></tr></table>
The grandpa's ages in the second table are either impossible or very unlikely. 
As of the year 2022, the oldest recorded age is 122.
However, with modern medicine getting better and better, perhaps ages like 144, 150, and 160 won't be too crazy in the (near) distant future. 


Your teacher probably is going to side with the first table if anything.
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