Gretchen is using an overhead projector to enlarge a drawing so she can make a poster. The original drawing measures 60 mm wide by 80 mm high. She moves the projector so that the width of the projected image is 300 mm. If the original drawing and the projected image are similar figures, what will be the height of the projected image?
A. 400 mm

B. 180 mm

C. 225 mm

D. 440 mm

Question

Gretchen is using an overhead projector to enlarge a drawing so she can make a poster. The original drawing measures 60 mm wide by 80 mm high. She moves the projector so that the width of the projected image is 300 mm. If the original drawing and the projected image are similar figures, what will be the height of the projected image?
A. 400 mm
	
B. 180 mm
	
C. 225 mm
	
D. 440 mm

kobeni-chan · Answer

A. 400 mm, the width was enlarged by 5, so you multiply the height by 5 as well

igreen · Answer

$80 \div 60 \approx 1.33333$

$1.33333 · 300 \approx 400$