The area of the original is 4x that of the reduced photo.The area of the reduced photo is 1/4 that of the original.

She sent a 4 cm-by-6 cm photo to each team member.If the photo were enlarged to 150% of its original size, what would be it's new length?(6)Suppose you want to make a 2 cm-by-3 cm copy of the original photo.What percent should you use?(50)

How would the top paragraph be the answer?

How I can see 4 is the bottom of the fraction so u would multiply and the top would be the answer because the denominator comes from the four.