Given that Bart and Melinda are grand children and Bart lives
6 blocks from his grand parents.
Also given that Melinda lives 8 blocks farther from her grandparents as Bart does .
This means Melinda lives 6+8 = 14 blocks from her grand father house
This question involves addition because farther as Bart does means , Melinda lives 8 +6 hence we get 14
Answer is: Melinda lives 14 blocks from her grandfathers