Start simply: join two tables and see what you get:
SELECT a,ID, a.Name, b.Income
FROM Table1 a
JOIN PlanA_income b ON a.ID = b.ID
That will give you
ID Name Income
1 Sam 150
1 Sam 300
2 Anderson 25
Now, convert that to totalized rows:
SELECT a.ID, a.Name, b.TotalIncome AS [sum of planA income]
FROM Table1 a
JOIN (SELECT ID, SUM(Income) AS TotalIncome FROM PlanA_income GROUP BY ID) b
ON a.ID = b.ID
Which gives you this:
ID Name sum of planA income
1 Sam 450
2 Anderson 25
And you are most of the way there.
Now, you should be able to add in the third table yourself, and then add the two totals together to complete the exercise.