CAT Exam 2021 Slot 1 Solved Paper

Let the amounts Neeta, Geeta, and Sita earn in a day be n, g, and s respectively.
Then, it has been given that:
$\mathrm{n}+\mathrm{g}=6\mathrm{s}$
$\mathrm{s}+\mathrm{n}=2\mathrm{g}$
(i) - (ii), we get: $\mathrm{s}-\mathrm{g}=2\mathrm{g}-6\mathrm{s}$
$7\mathrm{s}=3\mathrm{g}$
Let g be $7\mathrm{a}.$ Then $\mathrm{s}$ earns $3\mathrm{a}.$
Then $\mathrm{n}$ earns $6\mathrm{s}-\mathrm{g}=18\mathrm{a}-7\mathrm{a}=11\mathrm{a}.$
Thus, the ratio is $11\mathrm{a}:3\mathrm{a}=11:3$