Determine the taxable amount of Social Security benefits for the following situations.

If required, round your answers to the nearest dollar. If an amount is zero, enter $"0".$

a$.$ Tyler and Candice are married and file a joint tax return. They have adjusted gross income of $$40,400$ before considering their Social Security benefits, no tax$-$exempt interest, and $$14,140$ of Social Security benefits. As a result, $$ of the Social Security benefits are taxable.

b$.$ Assume Tyler and Candice have adjusted gross income of $$15,600$ before considering their Social Security benefits, no tax$-$exempt interest, and $$17,160$ of Social Security benefits. As a result, $$ of the Social Security benefits are taxable.

c$.$ Assume Tyler and Candice have adjusted gross income of $$86,500$ before considering their Social Security benefits, no tax$-$exempt interest, and $$12,975$ of Social Security benefits. As a result, : $$ of the Social Security benefits are taxable.