The value of $2 \frac{1}{10}+3 \frac{11}{100}$ is
(A) 5.11
(B) 5.111
(C) 5.12
(D) 5.21
(E) 5.3
Solution

$$
\begin{aligned}
2 \frac{1}{10}+3 \frac{11}{100} & =2.1+3.11 \\
& =5.21
\end{aligned}
$$

AnSWER: (D)