Answer
See the picture.
Work Step by Step
The height of the first bar (25 - 34): $\approx0.305$
The height of the last bar (55 - 64): $\approx0.170$
$\frac{The~height~of~the~first~bar}{The~height~of~the~last~bar}=\frac{0.305}{0.170}\approx1.8$
That is, the proportion of people aged 25 to 34 years old not covered by any health insurance is about 1.8 times the proportion of people aged 55 to 64 years old not covered by any health insurance.
