Answer
P(both spouses work) $=\frac{1149}{1700}\approx0.676$
Work Step by Step
The sample space: 1700 married couples. So, N(S) = 1700
According to the third row: N(both spouses work) = 1149
P(both spouses work) = $\frac{N(\text{both spouses})}{N(S)}=\frac{1149}{1700}\approx0.676$
