Photo egative

Negative dimensions are 36mm and 28mm. What will the photo size be in the 21:4 ratio?

Correct answer:

a =  18.9 cm
b =  14.7 cm

Step-by-step explanation:

k=21/4/10=4021=0.525 a=36 k=36 0.525=10189 cm=18.9 cm
b=28 k=28 0.525=10147 cm=14.7 cm

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