Using empirical probability.
On Saturday, a total of 429+382+424=1235 people visited the library. Then, the empirical probability of a person going to the Youth Wing section is
![P(YW)=(429)/(1235)=(33)/(95)](https://img.qammunity.org/2023/formulas/mathematics/college/5yfcermr8s0cxuh3hrxp39inse7c0x0apu.png)
Then, if on Sunday the library had 1100 visitors,
![\begin{gathered} P_{\text{sunday}}(YW)=1100((33)/(95))=(7260)/(19)=382.105\ldots \\ \Rightarrow P_{\text{sunday}}(YW)\approx382 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/sa9cmmc2pz5bxs56nw7dfs8ry1fl1brfso.png)
The answer is 382 people.