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  1. The ratio of two numbers is 10 : 7 and their difference is 105. The sum of these numbers is
    1. 595
    2. 805
    3. 1190
    4. 1610
Correct Option: A

Let the nos. be 10x & 7 x
then, 10 x – 7x = 105
⇒  3x = 105 ⇒ x = 35
∴  Sum = 10x + 7x = 17x
= 17 × 35 = 595


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