SSC CGL Tier-1 23-Aug-2021 Shift 2 Solved Paper

Let monthly salary of A and B be ₹x.
According to the question, ⇒‌‌‌

10x

100

−‌

7x

100

=900
⇒‌‌3x=900×100
⇒‌‌x=₹30000
The monthly salary of A=B=₹30000
Let montly salary of C is ₹y.
Total donation by A and B is 600 more than of C. (given in question)
Now, donation given by A=10% of 30000=₹3000
and donation given by B=7% of
30000=₹2100
Total donation =₹5100
Again, according to the question,
So, the monthly salary of y is ₹50000.