a) 4 Years
b) 5 Years
c) 6 Years
d) 7 years
Answer: b
Explanation: Let Sulekha age be 9 year,
Arunima’s age = 8x years
$$\eqalign{
& \frac{{9x + 5}}{{8x + 5}} = \frac{{10}}{9} \cr
& 9\left( {9x + 5} \right) = 10\left( {8x + 5} \right) \cr
& 81x + 45 = 80x + 50 \cr
& x = 5 \cr} $$
Difference in their ages
= (9x – 8x) years
= x years
= 5 years
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