Algebra:

let William sal be X, and boss salary be Y

1>Salary diff Y-X=30000

2> after 2 consecutive hike william salary = (3/5)*boss’s salary after one hike
i.e X*1.1*1.2 = (3/5)

*Y*1.1

i.e Y=2X

now solve both equations

Answer B

Thanks. I thought hike means decrease.

The answer is C though, as it asks about the current salary.

yep may bad. its 66000 and 60000 was initial