A man has $290,000 invested in three properties. One earns 12%, one 10% and one 8%. His annual income from the properties is $27,600 and the amount invested at 8% is twice that invested at 12%.
(a) How much is invested in each property?
12% property $
10% property $
8% property $

(b) What is the annual income from each property?
12% property $
10% property $
8% property $