Question

The diagram shows the length and width of a cell phone, and the length of a larger version of the same brand cell phone.

The lengths and widths of the two cell phones are proportional. What is the width, in inches?

Answer 1

$\qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star$

• missing length = 2.99 in

$\textsf{ \underline{\underline{Steps to solve the problem} }:}$

Both the figures are similar to each other, so ratio of their corresponding sides will be equal to one another.

$\qquad❖ \: \sf \: \dfrac{2.6}{5.4} = \dfrac{x}{6.21}$

( taking missing width be x )

$\qquad❖ \: \sf \: x = \dfrac{1.3}{2.7} \sdot6.21$

$\qquad❖ \: \sf \: x = {(1.3)}{} \sdot(2.3)$

$\qquad❖ \: \sf \:x = 2.99 \: \: in$

$\qquad \large \sf {Conclusion} :$

Missing side measures : 2.99 inches