A photograph
A photograph will stick to a white square letter with an x cm length. The photo is 3/4 x cm long and 20 cm wide than the width of the paper. The surface of the remaining paper surrounding the photograph is 990 cm2. Find the size of the paper and the photo.
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- quadratic equation
- equation
- expression of a variable from the formula
- planimetrics
- area of a shape
- square
- rectangle
Units of physical quantities:
Grade of the word problem:
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