The length and width of the rectangle together are 16 mm. What is the length and width of a rectangle if the width is 3 times shorter than its length.
Let’s solve the problem using the equation:
Let the width be x mm, then the length is 3 x mm, since the length and width together are 16 mm. We get the equation
3x + x = 16
4x = 16
x = 16: 4
x = 4, So the width of the rectangle is 4mm, then the length is 4 * 3 = 12mm.
Answer: the length of the rectangle is 12 mm, the width is 4 mm.
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