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The ratio of two numbers is 5 : 7 and their LCM is 105. If X is the ratio of sum of the numbers and difference of the numbers. What is the value of X?1). 182). 213). 64). 12 |
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Answer» Let the two numbers be 5x and 7x respectively. LCM of 5x and 7x is 35x. ⇒ 35x = 105 ⇒ x = 105/35 = 3 ⇒ The SUM of the two numbers = 5 × 3 + 7 × 3 = 15 + 21 = 36 Difference of the two numbers = 21 – 15 = 6 X = 36/6 = 6 ∴ X = 6 |
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