Sachin is younger than Rahul by 4 years. If their ages are in the respective ratio of 7:9, how old is Sachin?
Choose the correct choice from the following answers.
A) 24.7 years
B) 28.5 years
C) 24.6 years
D) 23.5 years
E) 24.5 years
Let Rahul's age be x years.   Then, Sachin's age = (x - 7) years.   (x - 7)/x = 7/9   2x = 63 =&gt; x = 31.5   Hence, Sachin's age = (x - 7)   = 24.5 years.   Answer:24.5 years
<result>E</result>
Sachin is younger than Rahul by 4 years. If their ages are in the respective ratio of 7:9, how old is Sachin?