Chapter 2.4, Problem 53E

HOME SALES $\text{K\&R}$ Builders build three models of houses, $M_1$, $M_2$, and $M_3$ in three subdivisions $\text{I}$, $\text{II}$, and $\text{III}$ located in three different areas of a city. The prices of the houses (in thousands of dollars) are given in matrix $A$:

$\begin{array}{l}\begin{array}{ccc}{M}_1& M_2& M_3\end{array}\\ A=\begin{array}{c}\text{I}\\ \text{II}\\ \text{III}\end{array}\left[\begin{array}{ccc}340& 360& 380\\ 410& 430& 440\\ 620& 660& 700\end{array}\right]\end{array}$

$\text{K\&R}$ Builders has decided to raise the price of each house by $3\%$ next year. Write a matrix $B$ giving the new prices of the houses.