# There are four numbers in the ratio of 1:2:3:4. The sum of these four numbers is 16, then sum of first and fourth number is :

There are four numbers in the ratio of 1:2:3:4. The sum of these four numbers is 16, then sum of first and fourth number is :
[A]5
[B]8
[C]10
[D]80

8
Sum of first and fourth number is :
$\because \left [ \frac{1}{10}+\frac{4}{10} \right ]\times 16=8$
Hence option [B] is the right answer.