That's what I did and since the zeros would be -5 and 3 the answer would be 3 since it can't be a negative
412 ÷ 20 = 20 boxes with 12 remaining.
Total boxes needed = 20 + 1 = 21
Answer: 21 boxes will be needed.
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Explanation:</h2><h2>
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When we have relationships between two variables and their ratios are equivalent, we call this as proportional relationship. A scale drawing is a model that has been reduced or enlarged from its original size. Suppose you have a horse that measures 1,5m high by 2m long and want to draw a reduced model by a scale factor of 1:10, then your drawing will measure:

So the components are:
- Measurements of the original object
- Measurements of the drawing
- Scale factor