SSC MTS & Havaldar 2016 · Question 126 of 162

The ratio of present ages of R and S is 5 : 7, 5 years ago R was 30 years

A39Correct
B32
C49
D42 48. In the following question below are given some statements followed by (+1, -0.25) some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: All oranges are sweet. Some sweet are round. Conclusions: I. Some oranges are round. II. No oranges are round. a. Only conclusion (I) follows. b. Only conclusion (II) follows. c. Both conclusions follow. d. either conclusion (I) or conclusion (II) follows.

Answer: A. 39

Explanation

Present age ratio of R and S = 5 : 7 Let, the present age of R and S is 5x years and 7x years respectively. 5 years ago R was 30 years old (given) → 5x - 5 = 30 →x=7 Age of S 10 years ago = 7x - 10 → 7 × 7 - 10 = 39 years Hence, age of S 10 years ago will be 39 years.

Source: SSC MTS 2016 re-exam (held 10-Oct-2017 Shift 1) paper with key+explanations, via prepp.in · reliable-secondary

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