Dimensions 9371

Change both dimensions of the rectangle in a ratio of 5:3. Initially, the dimensions are 9cm and 15cm. What are the dimensions of the rectangle after the change?

Correct answer:

a =  15 cm
b =  25 cm

Step-by-step explanation:

$$\begin{gathered} x=9\text{cm} \\ y=15\text{cm} \\ k=5/3=\frac{5}{3}\doteq 1.6667 \\ a=k\cdot x=1.6667\cdot 9=15\text{cm} \end{gathered}$$

$b=k\cdot y=1.6667\cdot 15=25\text{cm}$

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