The ratio of the ages of Raja and David is 2 : 3. The total of their ages is 3.0 decades. The proportion of their ages after 0.5 decades will be
[1 Decade = 10 years]  Choose the most appropriate option.
A) 17 : 23  B) 3:4  C) 4:5  D) 7:9  E) 3:6
Let, Raja’s age = 217 : 23 and David’s age = 317 : 23   Then 217 : 23 + 317 : 23 = 30   17 : 23 = 6   Raja’s age = 12 years   and David’s age = 18 years   Proportion of their ages after 5 is = (12 + 5) : (18 + 5)   = 17 : 23   17 : 23nswer : 17 : 23
<result>A</result>
The ratio of the ages of Raja and David is 2 : 3. The total of their ages is 3.0 decades. The proportion of their ages after 0.5 decades will be
[1 Decade = 10 years]