4 numbers d, b, c and a are in proportion. Find the value of a in terms of b if d = 2b and b = 5c.
4 numbers d, b, c and a are in proportion. Find the value of a in terms of b if d = 2b and b = 5c. Correct Answer b / 10
Let the value of c be x. B = 5c = 5x D = 2b = 5x * 2 = 10x A = b * c / d = 5x * x / 10x = X / 2 B = 5x, a = x / 2 : a = b / 10
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Feb 20, 2025