Answer: Option A
:
A
Let the total marks scored by an Six students put together in Economics be 'x' and that in Accounts be 'y'
Then the total marks scored by sachin in Economics = 30% of x
$\therefore$ Marks scored by Sachin in the internals of Economics = 20% of 30% of x = 0.06x
Similarly, the total marks scored by Ashish in Accounts = 20% of y
$\therefore$ Marks scored by Ashish in the internals of Accounts = 5% of 20% of y = 0.01y
From the condition given in the question, both these marks are equal.
$\therefore$ 0.06x = 0.01y
$\therefore$ x : y = 1 : 6