Determine the maximum contribution that can be made to a Keogh plan in each of the following cases. In all instances, the individual is self$-$employed, and the self$-$employment tax reduction has already been taken.

Required:

$00$:$40$:$04$

a$.$ Self$-$employment income of $$71,800.$

b$.$ Self$-$employment income of $$71,800$ and wage income of $$30,800.$

c$.$ Self$-$employment income of $$125,000.$

d$.$ Self$-$employment income of $$355,800.$

a Maximum Keogh plan contribution

Amount

S

S

b$.$ Maximum Keogh plan contribution

$14\mathrm{.}360$

$14360$

c$.$ Maximum Keogh plan contribution

$25,000$

d$.$ Maximum Keogh plan contribution

S

$66,000$