Question

Lris has a family photograph with a width of8 in and a height of10 in. she wants to enlarge the photograph so that its width is 12 in. what will the height ofthe enlarged photograph be?

Answer 1

It has a width of 8 inches....she wants a width of 12 inches....so we need the scale factor....8 times what number = 12
8x = 12
x = 12/8
x = 3/2....so we have a scale factor of 3/2....because 8 * 3/2 = 12

so if we multiply the old width by 3/2, then we need to multiply the old height by 3/2 as well.

10 * 3/2 = 30/2 = 15....so the new height will be 15 inches <==