Answer:
[tex]\dfrac{43}{55}[/tex]
Step-by-step explanation:
To find what fraction of the monthly income must go to the house payment, we can divide the house payment by the monthly income.
[tex]\dfrac{\text{house payment}}{\text{monthly income}}[/tex]
[tex]= \dfrac{860}{1100}[/tex]
We can simplify this fraction by representing the numerator and denominator by their prime factorizations, then canceling factors that appear in both the numerator and denominator.
[tex]= \dfrac{\not2 \cdot \not2 \cdot \not5 \cdot 43}{\not2 \cdot \not2 \cdot \not5\cdot 5\cdot11}[/tex]
[tex]\boxed{= \dfrac{43}{55}}[/tex]