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Three positive numbers are in the ratio 12:13:14. Find the numbers if the sum of their squares is 244. - Mathematics

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प्रश्न

Three positive numbers are in the ratio `1/2 : 1/3 : 1/4`. Find the numbers if the sum of their squares is 244.

योग

उत्तर

Given, three positive numbers are in the ratio `1/2 : 1/3 : 1/4 = 6 : 4 : 3`

Let the numbers be 6x, 4x and 3x.

From the given information,

(6x)2 + (4x)2 + (3x)2 = 244

36x2 + 16x2 + 9x2 = 244

61x2 = 244

x2 = 4

x = ± 2

Since, the numbers are positive, so x = 2.

Thus, the numbers are 12, 8 and 6.

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अध्याय 6: Solving (simple) Problems (Based on Quadratic Equations) - Exercise 6 (A) [पृष्ठ ७०]

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सेलिना Mathematics [English] Class 10 ICSE
अध्याय 6 Solving (simple) Problems (Based on Quadratic Equations)
Exercise 6 (A) | Q 11 | पृष्ठ ७०
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