Question 316549
Rectangle A has 6 times the area of rectangle B.  The width of rectangle A is 1/5 the width of rectangle B.  The height of rectangle A is 20 inches.  What is the height of rectangle B?

Let width of rectangle B be x
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width of rectangle A = x/5
height of rectangle A = 20
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Area of rectangle A = 4x
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Area of rectangle A = 6 times area of rectangle B
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Area of rectangle B = 2x/3
width of rectangle B = x
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height of rectangle B = area / width
2x /3   / x
height of rectangle B=2/3