Answer:
The combined amount is $14871.21.
Explanation:
It is given that, the total yearly income of gentry family is $29742.42
The % charge on income for food is 20%.
The % charge on income for housing is 30%.
The amount in dollar from % form is given by,
=

For annual food,
=

= $5948.484
For housing budgets,
=

= $8922.726
Thus the combined amount is,
=

= $14871.21