NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
Railways PYQCBT 1 2016

RRB NTPC · Question 99

3 years ago, the ratio of Maya’s and Shika’s age was 5 : 9 respectively. After 5 years, this ratio would become 3 : 5. Find present age of Maya? A. 40 B. 45 C. 43 D. 53

  1. C

  2. A

  3. D

  4. B

Show answer & explanation

Answer: (A) C

Explanation

Three years ago Maya and Shika were 5k and 9k, so now they are 5k + 3 and 9k + 3. Five years from now (5k + 8)/(9k + 8) = 3/5, so 25k + 40 = 27k + 24 and k = 8. Maya's present age = 5 × 8 + 3 = 43.