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प्रश्न
Find the value of x in the following proportions : 10 : 35 = x : 42
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उत्तर
10 : 35 = x : 42
⇒ 35 × x = 10 × 42
∴ x = `(10 xx 42)/(35)`
= 2 x 6
= 12.
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