Question

A photograph measures 10 in. wide by 18 in. long. The picture is reduced so that the length is 6 in.

Answer 1

Data:
Wide by Length
10 by 18
y by 6

Solving: Rule of three (directly proportional)
$\frac{10}{18} = \frac{x}{6}$
multiply cross
$18*x = 10*6$
$18x = 60$
$x = \frac{60}{18} \to\:\boxed{x\approx3.3\:in}$

Answer:
the new width is aproximately 3.3 in