Idon't i understand the concept of the question..

X% of y means x/100 times y

52% is bonus
17% is getaway weekend
52-17=35
find 35% of 92000=32200

32,200 people prefer the bonus over the getaway
C is answer

The clear answer is clearly 25 is very clear to me

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8