Question

if an image is 21 cm wide on the website when it's displayed on jalissa's computer how wide should the image be on the tablet?

Answer 1

The ratio tablet to computer is given by

$\text{ratio}=\frac{\text{tablet}}{\text{computer}}=\frac{9.7\text{ inches}}{21\text{ inches}}=\frac{9.7}{21}$

This ratio must be preserved, then we have

$\frac{\text{ wide tablet}}{\text{wide computer}}=\frac{9.7}{21}$

By substituting the given values, we have

$\frac{\text{ wide tablet}}{21\text{ cm}}=\frac{9.7}{21}$

then the wide on the table is

$\begin{gathered} \text{ wide tablet = 21}\times\frac{9.7}{21}cm \\ \text{ wide tablet = }9.7\text{cm} \end{gathered}$

which is equivalent to 97 milimeters because 1 centimeter has 10 milimeters. Then, the answer is option C.