Question 68

If 16: X :: X 196, find the positive value of 'X'?

Solution

If 16: X :: X 196.

$$\frac{16}{X}\ =\frac{X}{196}$$

$$16\times196\ =X^2$$

$$X^2 = 3136$$

$$X=\sqrt{3136}$$
X = 56, -56

Positive value of X = 56

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