<h3>The present age of Jackson is 25 years old</h3>
<em><u>Solution:</u></em>
Let the present age of Jackson be "x"
Therefore
Jackson's age 7 years ago = x - 7
And, Jackson's age after 20 years = x + 20
From given question,
Jackson’s age was 2/5 of the age he will be 20 years from now 7 years ago

Thus present age of Jackson is 25 years old