SSC Government Jobs Exams Numerical Ability Ratio and Proportion

Present ages of Kiran and Syam are in the ratio of 5 : 4 respectively. Three years hence, the ratio of their ages will become 11 : 9 respectively. What is Syam's present age in years?

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SSC Other Question

if 20+15=24 and 64+13=42 then 11+28=? If 2x+3y=11/2 and xy=5/6, then the value of 8x^3+27y^3 is
a)671/8 b)583 c)583/4 d)187